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  1. class test {
  2.  
  3. public static void main(String[] args){
  4. 	String s1 = "1";
  5. String s2 = s1.concat("2");
  6. s2.concat("3");
  7. System.out.println(s2);
  8. }}
Success #stdin #stdout 0.06s 32500KB
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12
https://ideone.com/iK6SBY
language:
Java (HotSpot 12)
created:
4 years ago
visibility:
public

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