Execute a command with more than one argument : Runtime System « Development « Java Tutorial

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3. Runtime System

public class Main {
  public static void main(String[] argv) throws Exception {
    // Execute a command with an argument that contains a space
    String[] commands = new String[] { "grep", "hello world", "/tmp/f.txt" };

    commands = new String[] { "grep", "hello world", "c:\\f.txt" };

    Process child = Runtime.getRuntime().exec(commands);

  }
}