public static void main(String[] args) { showSelf(); TestThread myThread1 = new TestThread(); TestThread myThread2 = new TestThread(); myThread1.start(); myThread2.start(); int[] a1 = {1, 2, 3, 4, 5}; int[] a2; a2 = a1; for (int i = 0; i < a2.length; i++) { a2[i]++; } for (int i = 0; i < a1.length; i++) { prt("a1[" + i + "] = " + a1[i]); } Vector v = new Vector(); for (int i = 0; i < 5; i++) { v.addElement(new Test()); } System.out.println(v); }