Movatterモバイル変換

Class ProcessBuilder.Redirect

java.lang.Object
- java.lang.ProcessBuilder.Redirect

Enclosing class:
ProcessBuilder
```
public abstract static classProcessBuilder.RedirectextendsObject
```
Represents a source of subprocess input or a destination of subprocess output. EachRedirect instance is one of the following:
- the special valueRedirect.PIPE
- the special valueRedirect.INHERIT
- the special valueRedirect.DISCARD
- a redirection to read from a file, created by an invocation ofRedirect.from(File)
- a redirection to write to a file, created by an invocation ofRedirect.to(File)
- a redirection to append to a file, created by an invocation ofRedirect.appendTo(File)
Each of the above categories has an associated uniqueType.
Since:
1.7

Nested Class Summary
Nested Classes
Modifier and Type Class Description
static class ProcessBuilder.Redirect.Type
The type of aProcessBuilder.Redirect.

Nested Classes
Modifier and Type	Class	Description
`static class`	`ProcessBuilder.Redirect.Type`	The type of a`ProcessBuilder.Redirect`.

Field Summary

Fields
Modifier and Type	Field	Description
`staticProcessBuilder.Redirect`	`DISCARD`	Indicates that subprocess output will be discarded.
`staticProcessBuilder.Redirect`	`INHERIT`	Indicates that subprocess I/O source or destination will be the same as those of the current process.
`staticProcessBuilder.Redirect`	`PIPE`	Indicates that subprocess I/O will be connected to the current Java process over a pipe.

Method Summary

All Methods Static Methods Instance Methods Abstract Methods Concrete Methods
Modifier and Type	Method	Description
`staticProcessBuilder.Redirect`	`appendTo(File file)`	Returns a redirect to append to the specified file.
`boolean`	`equals(Object obj)`	Compares the specified object with this`Redirect` for equality.
`File`	`file()`	Returns the`File` source or destination associated with this redirect, or`null` if there is no such file.
`staticProcessBuilder.Redirect`	`from(File file)`	Returns a redirect to read from the specified file.
`int`	`hashCode()`	Returns a hash code value for this`Redirect`.
`staticProcessBuilder.Redirect`	`to(File file)`	Returns a redirect to write to the specified file.
`abstractProcessBuilder.Redirect.Type`	`type()`	Returns the type of this`Redirect`.

Methods declared in class java.lang.Object
clone,finalize,getClass,notify,notifyAll,toString,wait,wait,wait

- Field Detail
  - PIPE
```
public static final ProcessBuilder.Redirect PIPE
```
    Indicates that subprocess I/O will be connected to the current Java process over a pipe. This is the default handling of subprocess standard I/O.
    It will always be true that
    Redirect.PIPE.file() == null && Redirect.PIPE.type() == Redirect.Type.PIPE
  - INHERIT
```
public static final ProcessBuilder.Redirect INHERIT
```
    Indicates that subprocess I/O source or destination will be the same as those of the current process. This is the normal behavior of most operating system command interpreters (shells).
    It will always be true that
    Redirect.INHERIT.file() == null && Redirect.INHERIT.type() == Redirect.Type.INHERIT
  - DISCARD
```
public static final ProcessBuilder.Redirect DISCARD
```
    Indicates that subprocess output will be discarded. A typical implementation discards the output by writing to an operating system specific "null file".
    It will always be true that
    Redirect.DISCARD.file() is the filename appropriate for the operating system and may be null && Redirect.DISCARD.type() == Redirect.Type.WRITE
    Since:
    9
- Method Detail
  - type
```
public abstract ProcessBuilder.Redirect.Type type()
```
    Returns the type of thisRedirect.
    Returns:
    the type of thisRedirect
  - file
```
public File file()
```
    Returns theFile source or destination associated with this redirect, ornull if there is no such file.
    Returns:
    the file associated with this redirect, ornull if there is no such file
  - from
```
public static ProcessBuilder.Redirect from(File file)
```
    Returns a redirect to read from the specified file.
    It will always be true that
    Redirect.from(file).file() == file && Redirect.from(file).type() == Redirect.Type.READ
    Parameters:
    file - TheFile for theRedirect.
    Returns:
    a redirect to read from the specified file
  - to
```
public static ProcessBuilder.Redirect to(File file)
```
    Returns a redirect to write to the specified file. If the specified file exists when the subprocess is started, its previous contents will be discarded.
    It will always be true that
    Redirect.to(file).file() == file && Redirect.to(file).type() == Redirect.Type.WRITE
    Parameters:
    file - TheFile for theRedirect.
    Returns:
    a redirect to write to the specified file
  - appendTo
```
public static ProcessBuilder.Redirect appendTo(File file)
```
    Returns a redirect to append to the specified file. Each write operation first advances the position to the end of the file and then writes the requested data. Whether the advancement of the position and the writing of the data are done in a single atomic operation is system-dependent and therefore unspecified.
    It will always be true that
    Redirect.appendTo(file).file() == file && Redirect.appendTo(file).type() == Redirect.Type.APPEND
    Parameters:
    file - TheFile for theRedirect.
    Returns:
    a redirect to append to the specified file
  - equals
```
public boolean equals(Object obj)
```
    Compares the specified object with thisRedirect for equality. Returnstrue if and only if the two objects are identical or both objects areRedirect instances of the same type associated with non-null equalFile instances.
    Overrides:
    equals in class Object
    Parameters:
    obj - the reference object with which to compare.
    Returns:
    true if this object is the same as the obj argument;false otherwise.
    See Also:
    Object.hashCode(),HashMap
  - hashCode
```
public int hashCode()
```
    Returns a hash code value for thisRedirect.
    Overrides:
    hashCode in class Object
    Returns:
    a hash code value for thisRedirect
    See Also:
    Object.equals(java.lang.Object),System.identityHashCode(java.lang.Object)

Movatterモバイル変換

Class ProcessBuilder.Redirect

Nested Class Summary

Field Summary

Method Summary

Methods declared in class java.lang.Object

Field Detail

PIPE

INHERIT

DISCARD

Method Detail

type

file

from

to

appendTo

equals

hashCode