关于JVM加载顺序面试题

最新推荐文章于 2024-06-20 21:53:43 发布

wanglong20101202

最新推荐文章于 2024-06-20 21:53:43 发布

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分类专栏： J2SE

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package com.wl.classloader;
class Singleton {
public static int counter1;
public static int counter2 = 0;
private static Singleton singleton = new Singleton();

private Singleton() {
counter1++;
counter2++;
}

public static Singleton getInstance(){
return singleton;
}

}

public class SingleTest{
public static void main(String[] args) {
Singleton ton = Singleton.getInstance();
System.out.println(ton.counter1);
System.out.println(ton.counter2);
}
}

结果打印为1 1

package com.wl.classloader;
class Singleton {

private static Singleton singleton = new Singleton();
public static int counter1;
public static int counter2 = 0;

private Singleton() {
counter1++;
counter2++;
}

public static Singleton getInstance(){
return singleton;
}

}

public class SingleTest{
public static void main(String[] args) {
Singleton ton = Singleton.getInstance();
System.out.println(ton.counter1);
System.out.println(ton.counter2);
}
}

结果打印为1 0