hadoop utilities : StringUtils 3 : format time

gistfile1.java

System.out.println ("1000000 ms = " + StringUtils.formatTime(1000000));
long t1 = System.currentTimeMillis();
// execute a command
long t2 = System.currentTimeMillis();
t2 += 10000000; // adjust for this demo
System.out.println ("operation took : " + StringUtils.formatTimeDiff(t2, t1));

/* output:
1000000 ms = 16mins, 40sec
operation took : 2hrs, 46mins, 40sec
*/