ProcessBuilder redirectError(Redirect) in Java

redirectError(Redirect): This method is available in the java.lang.ProcessBuilder class of Java.

Syntax:

ProcessBuilder java.lang.ProcessBuilder.redirectError(Redirect destination)

This method takes one argument. This method sets this process builder's standard error destination.

Subprocesses subsequently started by this object's start()method send their standard error to this destination.

Parameters: One parameter is required for this method.

destination: the new standard error destination.

Returns: this process builder.

Throws:

1. IllegalArgumentException - if the redirect does not correspond to a valid destination of data, that is, has type READ.

Approach

Java

package com.ProcessBuilder;

import java.lang.ProcessBuilder.Redirect;

public class ProcessBuilderredirectError3 {
    public static void main(String[] args) {

        ProcessBuilder processBuilder = 
                              new ProcessBuilder("notepad.exe");

        Redirect destination = Redirect.DISCARD;

        System.out.println(processBuilder.redirectError(destination));
    }
}

Output:

java.lang.ProcessBuilder@4926097b

Some methods of ProcessBuilder class

ProcessBuilder.ProcessBuilder(String...): This method constructs a process builder with the specified operating system program and arguments.

ProcessBuilder.ProcessBuilder(List<String>): This method constructs a process builder with the specified operating system program and arguments.

command(): This method returns this process builder's operating system program and arguments.

command(List<String>): This method sets this process builder's operating system program and arguments.

command(String...): This method sets this process builder's operating system program and arguments. 

directory(): This method returns this process builder's working directory.

directory(File): This method sets this process builder's working directory.

environment(): This method returns a string map view of this process builder's environment.

inheritIO(): This method sets the source and destination for subprocess standard I/O to be the same as those of the current Java process.

redirectError(): This method returns this process builder's standard error destination.

redirectError(File): This method sets this process builder's standard error destination to a file.

redirectError(Redirect): This method sets this process builder's standard error destination.

redirectErrorStream(): This method tells whether this process builder merges standard error and standard output.

redirectErrorStream(boolean): This method sets this process builder's redirectErrorStream property.

redirectInput(): This method returns this process builder's standard input source.

redirectInput(File): This method sets this process builder's standard input source to a file.

redirectInput(Redirect): This method sets this process builder's standard input source.

redirectOutput(): This method returns this process builder's standard output destination.

redirectOutput(File): This method sets this process builder's standard output destination to a file.

redirectOutput(Redirect): This method sets this process builder's standard output destination.

start(): This method starts a new process using the attributes of this process builder.

ProcessBuilder.startPipeline(List<ProcessBuilder>): his method starts a Process for each ProcessBuilder, creating a pipeline of processes linked by their standard output and standard input streams.