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Showing content from https://docs.oracle.com/en/java/javase/11/docs/api/java.base/java/lang/ProcessBuilder.Redirect.html below:

ProcessBuilder.Redirect (Java SE 11 & JDK 11 )

- 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 this Redirect.
    
    Returns:
    
    the type of this Redirect
  - file
```
public File file()
```
    Returns the
    File
    source or destination associated with this redirect, or
    null
    if there is no such file.
    
    Returns:
    
    the file associated with this redirect, or null 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 - The File for the Redirect.
    
    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 - The File for the Redirect.
    
    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 - The File for the Redirect.
    
    Returns:
    
    a redirect to append to the specified file
  - equals
```
public boolean equals(Object obj)
```
    Compares the specified object with this Redirect for equality. Returns true if and only if the two objects are identical or both objects are Redirect instances of the same type associated with non-null equal File 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 this Redirect.
    
    Overrides:
    
    hashCode in class Object
    
    Returns:
    
    a hash code value for this Redirect
    
    See Also:
    
    Object.equals(java.lang.Object), System.identityHashCode(java.lang.Object)

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