format

format args to the format string format and write the result to the stream

format(String format, Object... args);
 
return value: stream

   String strout = null;
   String str = "is the answer";
   int i = 42;
   String[] args = { "way", "example" };
 
   strout = String.format("%d %s", i, str);
   System.out.println(strout);
 
   strout = String.format( "this is another %s for this %s.", args ); 
   System.out.println(strout);

  42 is the answer
  this is another way for this example.