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public class SingletonTest {
private static SingletonTest singleton = new SingletonTest();
private SingletonTest(){
System.out.println("构造函数调用。。。");
}
public static SingletonTest getInstance(){
return singleton;
}
public static void main(String[] args) {
SingletonTest single = SingletonTest.getInstance();
SingletonTest single2 = SingletonTest.getInstance();
System.out.println(single == single2);
}
}