刨根问底儿————解析Java代码，看看toString的秘密

package com.test;

public class ToStringTest {
    static int i = 1;

    public static void main(String[] args) {
        System.out.println("love "+new ToStringTest());
        System.out.println(new ToStringTest());
        ToStringTest a = new ToStringTest();
        a.i++;
        System.out.println("me "+a.i);
    }

    public String toString(){
        System.out.print("I ");
        return "java";
    }
}