代码案例一：
package android.java.oop02;
class Student {
public int age;
public String name;
public void show() {
System.out.println("age:" + age + " name:" + name);
}
}
public class OopDemo01 {
public static void main(String[] args) {
Student s = new Student();
}
}
代码案例一 对应的内存图：
代码案例二：
package android.java.oop02;
class Student {
public int age;
public String name;
public void show() {
System.out.println("age:" + age + " name:" + name);
}
}
public class OopDemo01 {
public static void main(String[] args) {
Student s = new Student();
s.age = 19;
s.name = "mcc";
s.show();
}
}
代码案例二对应的内存图：
代码案例三：
package android.java.oop02;
class Teacher {
public int age;
public String name;
public void show() {
System.out.println("age:" + age + " name:" + name);
}
}
public class OopDemo02 {
public static void main(String[] args) {
Teacher t = new Teacher();
t.age = 39;
t.name = "www";
Teacher t2 = t;
t2.age = 99;
t2.name = "JACK";
t.show();
}
}
执行结果：
age:99 name:JACK