标签：pack package string col put div 输出 sys tput
package basic.java; public class Case { public static void main(String[] args) { Student s = new Student(); System.out.println(s); } } basic.java.Student@19bb25a
输出的结果是包名.
package basic.java; public class Case { public static void main(String[] args) { Student s = new Student(); System.out.println(s); System.out.println(s.name); System.out.println(s.age); } } basic.java.Student@1e58cb8 null 0
String是一个引用类型的类，所以默认输出的是null。
Directly output the object name
标签：pack package string col put div 输出 sys tput
原文地址：https://www.cnblogs.com/lzp123456-/p/9739422.html
