阿里java面试题分析

这道题来源于阿里巴巴的面试

public class Text {                               //  1

    public static int k = 0;                           //2

    public static Text t1 = new Text("t1");            //3

    public static Text t2 = new Text("t2");            //4

    public static int i = print("i");                  //5

    public static int n = 99;                          //6

    public int j = print("j");                         //7

    {

        print("构造块");                                //8

    }

    static {

        print("静态块");                             // 9

    }

 

    public Text(String str) {                         //10

        System.out.println((++k) + ":" + str + "   i=" + i + "    n=" + n);

        ++i;

        ++n;

    }

 

    public static int print(String str) {            //11

        System.out.println((++k) + ":" + str + "   i=" + i + "    n=" + n);

        ++n;

        return ++i;

    }

 

    public static void main(String args[]) {         //12

        Text t = new Text("init");

    }

}

 

此程序首先执行public static int k = 0;随后进行加载类Text,先初始化静态属性（new Text("t1")），执行   7和8         然后执行 3，之后又遇到new Text("t2");然后又进行初始化静态属性，执行 7和8，初始化完成之后，开始执行4，之后便执行5，6，9；然后去执行  Text t = new Text("init")，执行之前先实例化类，然后在去执行相应的构造函数。

 

注意；如有不对请联系博主