ava私人建设者的目的 Java多行注释 过载Java主要方法 ava私人建设者的目的 public class Tester { private static Tester instance; private Tester(){} public static Tester getInstance(){ if(instance == null){ instance = new Tester(); } return instance; } public static void main(String[] args) { Tester tester = Tester.getInstance(); Tester tester1 = Tester.getInstance(); System.out.println(tester.equals(tester1)); } } Java多行注释 过载Java主要方法