Packages

trait ProcessBuilder extends Source with Sink

Represents a sequence of one or more external processes that can be executed. A ProcessBuilder can be a single external process, or a combination of other ProcessBuilder. One can control where the output of an external process will go to, and where its input will come from, or leave that decision to whoever starts it.

One creates a ProcessBuilder through factories provided in scala.sys.process.Process's companion object, or implicit conversions based on these factories made available in the package object scala.sys.process. Here are some examples:

import scala.sys.process._

// Executes "ls" and sends output to stdout
"ls".!

// Execute "ls" and assign a `LazyList[String]` of its output to "contents".
val contents = Process("ls").lazyLines

// Here we use a `Seq` to make the parameter whitespace-safe
def contentsOf(dir: String): String = Seq("ls", dir).!!

The methods of ProcessBuilder are divided in three categories: the ones that combine two ProcessBuilder to create a third, the ones that redirect input or output of a ProcessBuilder, and the ones that execute the external processes associated with it.

Combining ProcessBuilder

Two existing ProcessBuilder can be combined in the following ways:

  • They can be executed in parallel, with the output of the first being fed as input to the second, like Unix pipes. This is achieved with the #| method.
  • They can be executed in sequence, with the second starting as soon as the first ends. This is done by the ### method.
  • The execution of the second one can be conditioned by the return code (exit status) of the first, either only when it's zero, or only when it's not zero. The methods #&& and #|| accomplish these tasks.

Redirecting Input/Output

Though control of input and output can be done when executing the process, there's a few methods that create a new ProcessBuilder with a pre-configured input or output. They are #<, #> and #>>, and may take as input either another ProcessBuilder (like the pipe described above), or something else such as a java.io.File or a java.io.InputStream. For example:

new URL("https://databinder.net/dispatch/About") #> "grep JSON" #>> new File("About_JSON") !

Starting Processes

To execute all external commands associated with a ProcessBuilder, one may use one of four groups of methods. Each of these methods have various overloads and variations to enable further control over the I/O. These methods are:

  • run: the most general method, it returns a scala.sys.process.Process immediately, and the external command executes concurrently.
  • !: blocks until all external commands exit, and returns the exit code of the last one in the chain of execution.
  • !!: blocks until all external commands exit, and returns a String with the output generated.
  • lazyLines: returns immediately like run, and the output being generated is provided through a LazyList[String]. Getting the next element of that LazyList may block until it becomes available. This method will throw an exception if the return code is different than zero -- if this is not desired, use the lazyLines_! method.

Handling Input and Output

If not specified, the input of the external commands executed with run or ! will not be tied to anything, and the output will be redirected to the stdout and stderr of the Scala process. For the methods !! and lazyLines, no input will be provided, and the output will be directed according to the semantics of these methods.

Some methods will cause stdin to be used as input. Output can be controlled with a scala.sys.process.ProcessLogger -- !! and lazyLines will only redirect error output when passed a ProcessLogger. If one desires full control over input and output, then a scala.sys.process.ProcessIO can be used with run.

For example, we could silence the error output from lazyLines_! like this:

val etcFiles = "find /etc" lazyLines_! ProcessLogger(line => ())

Extended Example

Let's examine in detail one example of usage:

import scala.sys.process._
"find src -name *.scala -exec grep null {} ;"  #|  "xargs test -z"  #&&  "echo null-free"  #||  "echo null detected"  !

Note that every String is implicitly converted into a ProcessBuilder through the implicits imported from scala.sys.process. These ProcessBuilder are then combined in three different ways.

  1. #| pipes the output of the first command into the input of the second command. It mirrors a shell pipe (|).
  2. #&& conditionally executes the second command if the previous one finished with exit value 0. It mirrors shell's &&.
  3. #|| conditionally executes the third command if the exit value of the previous command is different than zero. It mirrors shell's ||.

Finally, ! at the end executes the commands, and returns the exit value. Whatever is printed will be sent to the Scala process standard output. If we wanted to capture it, we could run that with !! instead.

Note: though it is not shown above, the equivalent of a shell's ; would be ###. The reason for this name is that ; is a reserved token in Scala.

Source
ProcessBuilder.scala
Linear Supertypes
Type Hierarchy
Ordering
  1. Alphabetic
  2. By Inheritance
Inherited
  1. ProcessBuilder
  2. Sink
  3. Source
  4. AnyRef
  5. Any
Implicitly
  1. by any2stringadd
  2. by StringFormat
  3. by Ensuring
  4. by ArrowAssoc
  1. Hide All
  2. Show All
Visibility
  1. Public
  2. Protected

Abstract Value Members

  1. abstract def !(log: ProcessLogger): Int

    Starts the process represented by this builder, blocks until it exits, and returns the exit code.

    Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are sent to the given ProcessLogger.

  2. abstract def !: Int

    Starts the process represented by this builder, blocks until it exits, and returns the exit code.

    Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are sent to the console.

  3. abstract def !!(log: ProcessLogger): String

    Starts the process represented by this builder, blocks until it exits, and returns the output as a String.

    Starts the process represented by this builder, blocks until it exits, and returns the output as a String. Standard error is sent to the provided ProcessLogger. If the exit code is non-zero, an exception is thrown.

  4. abstract def !!: String

    Starts the process represented by this builder, blocks until it exits, and returns the output as a String.

    Starts the process represented by this builder, blocks until it exits, and returns the output as a String. Standard error is sent to the console. If the exit code is non-zero, an exception is thrown.

  5. abstract def !!<(log: ProcessLogger): String

    Starts the process represented by this builder, blocks until it exits, and returns the output as a String.

    Starts the process represented by this builder, blocks until it exits, and returns the output as a String. Standard error is sent to the provided ProcessLogger. If the exit code is non-zero, an exception is thrown. The newly started process reads from standard input of the current process.

  6. abstract def !!<: String

    Starts the process represented by this builder, blocks until it exits, and returns the output as a String.

    Starts the process represented by this builder, blocks until it exits, and returns the output as a String. Standard error is sent to the console. If the exit code is non-zero, an exception is thrown. The newly started process reads from standard input of the current process.

  7. abstract def !<(log: ProcessLogger): Int

    Starts the process represented by this builder, blocks until it exits, and returns the exit code.

    Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are sent to the given ProcessLogger. The newly started process reads from standard input of the current process.

  8. abstract def !<: Int

    Starts the process represented by this builder, blocks until it exits, and returns the exit code.

    Starts the process represented by this builder, blocks until it exits, and returns the exit code. Standard output and error are sent to the console. The newly started process reads from standard input of the current process.

  9. abstract def ###(other: ProcessBuilder): ProcessBuilder

    Constructs a command that will run this command and then other.

    Constructs a command that will run this command and then other. The exit code will be the exit code of other.

  10. abstract def #&&(other: ProcessBuilder): ProcessBuilder

    Constructs a command that runs this command first and then other if this command succeeds.

  11. abstract def #|(other: ProcessBuilder): ProcessBuilder

    Constructs a command that will run this command and pipes the output to other.

    Constructs a command that will run this command and pipes the output to other. other must be a simple command.

  12. abstract def #||(other: ProcessBuilder): ProcessBuilder

    Constructs a command that runs this command first and then other if this command does not succeed.

  13. abstract def canPipeTo: Boolean

    True if this command can be the target of a pipe.

  14. abstract def hasExitValue: Boolean

    True if this command has an exit code which should be propagated to the user.

    True if this command has an exit code which should be propagated to the user. Given a pipe between A and B, if B.hasExitValue is true then the exit code will be the one from B; if it is false, the one from A. This exists to prevent output redirections (implemented as pipes) from masking useful process error codes.

  15. abstract def lazyLines(log: ProcessLogger, capacity: Integer): LazyList[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a LazyList that blocks when lines are not available but the process has not completed. The producer process will block if the given capacity of lines if filled without being consumed from the LazyList. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, the LazyList will provide all lines up to termination and then throw an exception.

  16. abstract def lazyLines(log: ProcessLogger): LazyList[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a LazyList that blocks when lines are not available but the process has not completed. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, the LazyList will provide all lines up to termination and then throw an exception.

  17. abstract def lazyLines(capacity: Integer): LazyList[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a LazyList that blocks when lines are not available but the process has not completed. The producer process will block if the given capacity of lines if filled without being consumed from the LazyList. Standard error is sent to the console. If the process exits with a non-zero value, the LazyList will provide all lines up to termination and then throw an exception.

  18. abstract def lazyLines: LazyList[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a LazyList that blocks when lines are not available but the process has not completed. Standard error is sent to the console. If the process exits with a non-zero value, the LazyList will provide all lines up to termination and then throw an exception.

  19. abstract def lazyLines_!(log: ProcessLogger, capacity: Integer): LazyList[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a LazyList that blocks when lines are not available but the process has not completed. The producer process will block if the given capacity of lines if filled without being consumed from the stream. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, the LazyList will provide all lines up to termination but will not throw an exception.

  20. abstract def lazyLines_!(log: ProcessLogger): LazyList[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a LazyList that blocks when lines are not available but the process has not completed. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, the LazyList will provide all lines up to termination but will not throw an exception.

  21. abstract def lazyLines_!(capacity: Integer): LazyList[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a LazyList that blocks when lines are not available but the process has not completed. The producer process will block if the given capacity of lines if filled without being consumed from the stream. Standard error is sent to the console. If the process exits with a non-zero value, the LazyList will provide all lines up to termination but will not throw an exception.

  22. abstract def lazyLines_!: LazyList[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a LazyList that blocks when lines are not available but the process has not completed. Standard error is sent to the console. If the process exits with a non-zero value, the LazyList will provide all lines up to termination but will not throw an exception.

  23. abstract def run(log: ProcessLogger, connectInput: Boolean): Process

    Starts the process represented by this builder.

    Starts the process represented by this builder. Standard output and error are sent to the given ProcessLogger. The newly started process reads from standard input of the current process if connectInput is true.

  24. abstract def run(connectInput: Boolean): Process

    Starts the process represented by this builder.

    Starts the process represented by this builder. Standard output and error are sent to the console. The newly started process reads from standard input of the current process if connectInput is true.

  25. abstract def run(io: ProcessIO): Process

    Starts the process represented by this builder.

    Starts the process represented by this builder. I/O is handled by the given ProcessIO instance.

  26. abstract def run(log: ProcessLogger): Process

    Starts the process represented by this builder.

    Starts the process represented by this builder. Standard output and error are sent to the given ProcessLogger.

  27. abstract def run(): Process

    Starts the process represented by this builder.

    Starts the process represented by this builder. Standard output and error are sent to the console.

  28. abstract def toSink: ProcessBuilder
    Attributes
    protected
    Definition Classes
    Sink
  29. abstract def toSource: ProcessBuilder
    Attributes
    protected
    Definition Classes
    Source
  30. abstract def lineStream(log: ProcessLogger, capacity: Integer): Stream[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available but the process has not completed. The producer process will block if the given capacity of lines if filled without being consumed from the stream. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, the Stream will provide all lines up to termination and then throw an exception.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) use lazyLines

  31. abstract def lineStream(log: ProcessLogger): Stream[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available but the process has not completed. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, the Stream will provide all lines up to termination and then throw an exception.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) use lazyLines

  32. abstract def lineStream(capacity: Integer): Stream[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available but the process has not completed. The producer process will block if the given capacity of lines if filled without being consumed from the stream. Standard error is sent to the console. If the process exits with a non-zero value, the Stream will provide all lines up to termination and then throw an exception.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) use lazyLines

  33. abstract def lineStream: Stream[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available but the process has not completed. Standard error is sent to the console. If the process exits with a non-zero value, the Stream will provide all lines up to termination and then throw an exception.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) use lazyLines

  34. abstract def lineStream_!(log: ProcessLogger, capacity: Integer): Stream[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available but the process has not completed. The producer process will block if the given capacity of lines if filled without being consumed from the stream. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, the Stream will provide all lines up to termination but will not throw an exception.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) use lazyLines_!

  35. abstract def lineStream_!(log: ProcessLogger): Stream[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available but the process has not completed. Standard error is sent to the provided ProcessLogger. If the process exits with a non-zero value, the Stream will provide all lines up to termination but will not throw an exception.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) use lazyLines_!

  36. abstract def lineStream_!(capacity: Integer): Stream[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available but the process has not completed. The producer process will block if the given capacity of lines if filled without being consumed from the stream. Standard error is sent to the console. If the process exits with a non-zero value, the Stream will provide all lines up to termination but will not throw an exception.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) use lazyLines_!

  37. abstract def lineStream_!: Stream[String]

    Starts the process represented by this builder.

    Starts the process represented by this builder. The output is returned as a Stream that blocks when lines are not available but the process has not completed. Standard error is sent to the console. If the process exits with a non-zero value, the Stream will provide all lines up to termination but will not throw an exception.

    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) use lazyLines_!

Concrete Value Members

  1. final def !=(arg0: Any): Boolean

    Test two objects for inequality.

    Test two objects for inequality.

    returns

    true if !(this == that), false otherwise.

    Definition Classes
    AnyRef → Any
  2. final def ##: Int

    Equivalent to x.hashCode except for boxed numeric types and null.

    Equivalent to x.hashCode except for boxed numeric types and null. For numerics, it returns a hash value which is consistent with value equality: if two value type instances compare as true, then ## will produce the same hash value for each of them. For null returns a hashcode where null.hashCode throws a NullPointerException.

    returns

    a hash value consistent with ==

    Definition Classes
    AnyRef → Any
  3. def #<(b: ProcessBuilder): ProcessBuilder

    Reads the output of a scala.sys.process.ProcessBuilder into the input stream of this process.

    Reads the output of a scala.sys.process.ProcessBuilder into the input stream of this process.

    Definition Classes
    Sink
  4. def #<(in: => InputStream): ProcessBuilder

    Reads the given InputStream into the input stream of this process.

    Reads the given InputStream into the input stream of this process. The argument is call-by-name, so the stream is recreated, read, and closed each time this process is executed.

    Definition Classes
    Sink
  5. def #<(f: URL): ProcessBuilder

    Reads the given URL into the input stream of this process.

    Reads the given URL into the input stream of this process.

    Definition Classes
    Sink
  6. def #<(f: File): ProcessBuilder

    Reads the given file into the input stream of this process.

    Reads the given file into the input stream of this process.

    Definition Classes
    Sink
  7. def #>(b: ProcessBuilder): ProcessBuilder

    Writes the output stream of this process to a scala.sys.process.ProcessBuilder.

    Writes the output stream of this process to a scala.sys.process.ProcessBuilder.

    Definition Classes
    Source
  8. def #>(out: => OutputStream): ProcessBuilder

    Writes the output stream of this process to the given OutputStream.

    Writes the output stream of this process to the given OutputStream. The argument is call-by-name, so the stream is recreated, written, and closed each time this process is executed.

    Definition Classes
    Source
  9. def #>(f: File): ProcessBuilder

    Writes the output stream of this process to the given file.

    Writes the output stream of this process to the given file.

    Definition Classes
    Source
  10. def #>>(f: File): ProcessBuilder

    Appends the output stream of this process to the given file.

    Appends the output stream of this process to the given file.

    Definition Classes
    Source
  11. def +(other: String): String
    Implicit
    This member is added by an implicit conversion from ProcessBuilder toany2stringadd[ProcessBuilder] performed by method any2stringadd in scala.Predef.
    Definition Classes
    any2stringadd
  12. def ->[B](y: B): (ProcessBuilder, B)
    Implicit
    This member is added by an implicit conversion from ProcessBuilder toArrowAssoc[ProcessBuilder] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @inline()
  13. final def ==(arg0: Any): Boolean

    The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    The expression x == that is equivalent to if (x eq null) that eq null else x.equals(that).

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    AnyRef → Any
  14. final def asInstanceOf[T0]: T0

    Forces the compiler to treat the receiver object as having type T0, even though doing so may violate type safety.

    Forces the compiler to treat the receiver object as having type T0, even though doing so may violate type safety.

    This method is useful when you believe you have type information the compiler doesn't, and it also isn't possible to check the type at runtime. In such situations, skipping type safety is the only option.

    It is platform dependent whether asInstanceOf has any effect at runtime. It might do a runtime type test on the erasure of T0, insert a conversion (such as boxing/unboxing), fill in a default value, or do nothing at all.

    In particular, asInstanceOf is not a type test. It does **not** mean:

    this match {
     case x: T0 => x
     case _     => throw ClassCastException("...")

    Use pattern matching or isInstanceOf for type testing instead.

    Situations where asInstanceOf is useful:

    • when flow analysis fails to deduce T0 automatically
    • when down-casting a type parameter or an abstract type member (which cannot be checked at runtime due to type erasure) If there is any doubt and you are able to type test instead, you should do so.

    Be careful of using asInstanceOf when T0 is a primitive type. When T0 is primitive, asInstanceOf may insert a conversion instead of a type test. If your intent is to convert, use a toT method (x.toChar, x.toByte, etc.).

    returns

    the receiver object.

    Definition Classes
    Any
    Exceptions thrown

    ClassCastException if the receiver is not an instance of the erasure of T0, if that can be checked on this platform

  15. def cat: ProcessBuilder

    Returns a scala.sys.process.ProcessBuilder representing this Source.

    Returns a scala.sys.process.ProcessBuilder representing this Source.

    Definition Classes
    Source
  16. def clone(): AnyRef

    Create a copy of the receiver object.

    Create a copy of the receiver object.

    The default implementation of the clone method is platform dependent.

    returns

    a copy of the receiver object.

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.CloneNotSupportedException]) @native()
    Note

    not specified by SLS as a member of AnyRef

  17. def ensuring(cond: (ProcessBuilder) => Boolean, msg: => Any): ProcessBuilder
    Implicit
    This member is added by an implicit conversion from ProcessBuilder toEnsuring[ProcessBuilder] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  18. def ensuring(cond: (ProcessBuilder) => Boolean): ProcessBuilder
    Implicit
    This member is added by an implicit conversion from ProcessBuilder toEnsuring[ProcessBuilder] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  19. def ensuring(cond: Boolean, msg: => Any): ProcessBuilder
    Implicit
    This member is added by an implicit conversion from ProcessBuilder toEnsuring[ProcessBuilder] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  20. def ensuring(cond: Boolean): ProcessBuilder
    Implicit
    This member is added by an implicit conversion from ProcessBuilder toEnsuring[ProcessBuilder] performed by method Ensuring in scala.Predef.
    Definition Classes
    Ensuring
  21. final def eq(arg0: AnyRef): Boolean

    Tests whether the argument (that) is a reference to the receiver object (this).

    Tests whether the argument (that) is a reference to the receiver object (this).

    The eq method implements an equivalence relation on non-null instances of AnyRef, and has three additional properties:

    • It is consistent: for any non-null instances x and y of type AnyRef, multiple invocations of x.eq(y) consistently returns true or consistently returns false.
    • For any non-null instance x of type AnyRef, x.eq(null) and null.eq(x) returns false.
    • null.eq(null) returns true.

    When overriding the equals or hashCode methods, it is important to ensure that their behavior is consistent with reference equality. Therefore, if two objects are references to each other (o1 eq o2), they should be equal to each other (o1 == o2) and they should hash to the same value (o1.hashCode == o2.hashCode).

    returns

    true if the argument is a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  22. def equals(arg0: AnyRef): Boolean

    The equality method for reference types.

    The equality method for reference types. Default implementation delegates to eq.

    See also equals in scala.Any.

    returns

    true if the receiver object is equivalent to the argument; false otherwise.

    Definition Classes
    AnyRef → Any
  23. def finalize(): Unit

    Called by the garbage collector on the receiver object when there are no more references to the object.

    Called by the garbage collector on the receiver object when there are no more references to the object.

    The details of when and if the finalize method is invoked, as well as the interaction between finalize and non-local returns and exceptions, are all platform dependent.

    Attributes
    protected[lang]
    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.Throwable])
    Note

    not specified by SLS as a member of AnyRef

  24. final def getClass(): Class[_ <: AnyRef]

    Returns the runtime class representation of the object.

    Returns the runtime class representation of the object.

    returns

    a class object corresponding to the runtime type of the receiver.

    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  25. def hashCode(): Int

    The hashCode method for reference types.

    The hashCode method for reference types. See hashCode in scala.Any.

    returns

    the hash code value for this object.

    Definition Classes
    AnyRef → Any
    Annotations
    @native()
  26. final def isInstanceOf[T0]: Boolean

    Test whether the dynamic type of the receiver object has the same erasure as T0.

    Test whether the dynamic type of the receiver object has the same erasure as T0.

    Depending on what T0 is, the test is done in one of the below ways:

    • T0 is a non-parameterized class type, e.g. BigDecimal: this method returns true if the value of the receiver object is a BigDecimal or a subtype of BigDecimal.
    • T0 is a parameterized class type, e.g. List[Int]: this method returns true if the value of the receiver object is some List[X] for any X. For example, List(1, 2, 3).isInstanceOf[List[String]] will return true.
    • T0 is some singleton type x.type or literal x: this method returns this.eq(x). For example, x.isInstanceOf[1] is equivalent to x.eq(1)
    • T0 is an intersection X with Y or X & Y: this method is equivalent to x.isInstanceOf[X] && x.isInstanceOf[Y]
    • T0 is a union X | Y: this method is equivalent to x.isInstanceOf[X] || x.isInstanceOf[Y]
    • T0 is a type parameter or an abstract type member: this method is equivalent to isInstanceOf[U] where U is T0's upper bound, Any if T0 is unbounded. For example, x.isInstanceOf[A] where A is an unbounded type parameter will return true for any value of x.

    This is exactly equivalent to the type pattern _: T0

    returns

    true if the receiver object is an instance of erasure of type T0; false otherwise.

    Definition Classes
    Any
    Note

    due to the unexpectedness of List(1, 2, 3).isInstanceOf[List[String]] returning true and x.isInstanceOf[A] where A is a type parameter or abstract member returning true, these forms issue a warning.

  27. final def ne(arg0: AnyRef): Boolean

    Equivalent to !(this eq that).

    Equivalent to !(this eq that).

    returns

    true if the argument is not a reference to the receiver object; false otherwise.

    Definition Classes
    AnyRef
  28. final def notify(): Unit

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Wakes up a single thread that is waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Annotations
    @native()
    Note

    not specified by SLS as a member of AnyRef

  29. final def notifyAll(): Unit

    Wakes up all threads that are waiting on the receiver object's monitor.

    Wakes up all threads that are waiting on the receiver object's monitor.

    Definition Classes
    AnyRef
    Annotations
    @native()
    Note

    not specified by SLS as a member of AnyRef

  30. final def synchronized[T0](arg0: => T0): T0

    Executes the code in body with an exclusive lock on this.

    Executes the code in body with an exclusive lock on this.

    returns

    the result of body

    Definition Classes
    AnyRef
  31. def toString(): String

    Creates a String representation of this object.

    Creates a String representation of this object. The default representation is platform dependent. On the java platform it is the concatenation of the class name, "@", and the object's hashcode in hexadecimal.

    returns

    a String representation of the object.

    Definition Classes
    AnyRef → Any
  32. final def wait(): Unit

    See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait--.

    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
    Note

    not specified by SLS as a member of AnyRef

  33. final def wait(arg0: Long, arg1: Int): Unit

    See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-int-

    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException])
    Note

    not specified by SLS as a member of AnyRef

  34. final def wait(arg0: Long): Unit

    See https://docs.oracle.com/javase/8/docs/api/java/lang/Object.html#wait-long-.

    Definition Classes
    AnyRef
    Annotations
    @throws(classOf[java.lang.InterruptedException]) @native()
    Note

    not specified by SLS as a member of AnyRef

Deprecated Value Members

  1. def formatted(fmtstr: String): String

    Returns string formatted according to given format string.

    Returns string formatted according to given format string. Format strings are as for String.format (@see java.lang.String.format).

    Implicit
    This member is added by an implicit conversion from ProcessBuilder toStringFormat[ProcessBuilder] performed by method StringFormat in scala.Predef.
    Definition Classes
    StringFormat
    Annotations
    @deprecated @inline()
    Deprecated

    (Since version 2.12.16) Use formatString.format(value) instead of value.formatted(formatString), or use the f"" string interpolator. In Java 15 and later, formatted resolves to the new method in String which has reversed parameters.

  2. def [B](y: B): (ProcessBuilder, B)
    Implicit
    This member is added by an implicit conversion from ProcessBuilder toArrowAssoc[ProcessBuilder] performed by method ArrowAssoc in scala.Predef.
    Definition Classes
    ArrowAssoc
    Annotations
    @deprecated
    Deprecated

    (Since version 2.13.0) Use -> instead. If you still wish to display it as one character, consider using a font with programming ligatures such as Fira Code.

Inherited from Sink

Inherited from Source

Inherited from AnyRef

Inherited from Any

Inherited by implicit conversion any2stringadd fromProcessBuilder to any2stringadd[ProcessBuilder]

Inherited by implicit conversion StringFormat fromProcessBuilder to StringFormat[ProcessBuilder]

Inherited by implicit conversion Ensuring fromProcessBuilder to Ensuring[ProcessBuilder]

Inherited by implicit conversion ArrowAssoc fromProcessBuilder to ArrowAssoc[ProcessBuilder]

Ungrouped