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  1. import java.util.ArrayList;
  2.  
  3. class Ideone {
  4. public static void main(String[] args) {
  5. final ArrayList<Integer> list = new ArrayList<>();
  6. list.add(5);
  7.  
  8. new Runnable() {
  9. @Override public void run() { list.add(6); }
  10. }.run();
  11.  
  12. System.out.println(list);
  13. }
  14. }
Success #stdin #stdout 0.1s 320512KB
stdin
Standard input is empty
stdout
[5, 6]