小朋友学Java（6）：封装

class Woman {
    private String name;
    private int age;
    private Man husband;
    public void setName(String name) {
        this.name = name;
    }
    public String getName() {
        return name;
    }
    public void setAge(int age) {
        this.age = age;
    }
    public int getAge() {
        return age;
    }
    public void setHusband(Man husband) {
        this.husband = husband;
    }
    public Man getHusband() {
        return husband;
    }       
}
public class Man {
    private String name;
    private int age;
    private Woman wife;
    public void setName(String Name) {
        this.name = Name;
    }
    public String getName() {
        return this.name;
    }
    public void setAge(int Age) {
        this.age = Age;
    }
    public int getAge() {
        return this.age;
    }
    public void setWife(Woman wife) {
        this.wife = wife;
    }
}
class Test {
    public static void main(String[] args) {
        Woman w = new Woman();
        w.setName("Han Meimei");
        w.setAge(25);
        System.out.println("My name is " + w.getName());
        System.out.println("My age is " + w.getAge());
        Man m = new Man();
        m.setName("Li Lei");
        m.setAge(26);
        m.setWife(w);
        w.setHusband(m);
        System.out.println("My husband is " + w.getHusband().getName());
        System.out.println();
        System.out.println("My name is " + m.getName());
        System.out.println("My age is " + m.getAge());
        System.out.println("You don't know whether I have wife or not!");
    }
}

public class J {
    public static void printf(String str) {
        System.out.println(str);
    }
    public static void cout(String str) {
        System.out.println(str);
    }
}
class JTest {
    public static void main(String[] args) {
        J.printf("Hello World!");
        J.cout("Hello World!");
    }
}