// Create a process and verify failure exit code.public class Process_4
{public static voidmain(String[] args){try{
Runtime r = Runtime.getRuntime();
String[] a = {"false"};
Process p = r.exec(a);int c = p.waitFor();
System.out.println(c ==1 ? "ok":"bad");}catch(Exception ex){
System.out.println(ex.toString());}}}