Using Java with Other Languages - Java - page 955

Figure 24-1. ExecDemoNS in action

A newer class, ProcessBuilder , replaces most nontrivial uses of Runtime.exec() . This
ProcessBuilder uses Generic Collections to let you modify or replace the environment, as
shown in Example 24-2 .

Example 24-2. ProcessBuilderDemo.java
List < String > command = new new ArrayList <>();

command . add ( "notepad" );
command . add ( "foo.txt" );
ProcessBuilder builder = new new ProcessBuilder ( command );

builder . environment (). put ( "PATH" ,
"/windows;/windows/system32;/winnt" );

final final Process godot = builder . directory (

new

new File ( System . getProperty ( "user.home" ))).
start ();
System . err . println ( "Waiting for Godot" );
godot . waitFor ();

Set up the command-line argument list: editor program name and filename.

Us e that to start configuring the ProcessBuilder .

Co nfigure the builder's environment to a list of common MS Windows directories.