How to call member variables and member methods of objects in Java
Use objects to access members in a class:
对象名.成员变量; 对象名.成员方法();
Default value of member variables:
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Specific example code:
public class StudentTest_01 { public static void main(String[] args) { //创建对象格式,类名 对象名 = new 类名(); //无参数使用方法 Student s2 = new Student(); s2.setName("千寻1"); s2.setAge(25); System.out.println("姓名:"+ s2.getName()); System.out.println("年龄:"+ s2.getAge()); System.out.println("‐‐‐‐‐‐‐‐‐‐"); //有参数使用方法 Student s = new Student("千寻2",23); System.out.println("姓名:"+ s.getName()); //null System.out.println("年龄:"+ s.getAge()); //0 System.out.println("‐‐‐‐‐‐‐‐‐‐"); //调用成员方法 s.study(); s.eat(); } }
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