2021.9.9，内容：boygirl的练习。

 

public class Boy {

	private String name;
	private int age;

	// 空参
	public Boy() {

	}

	// 一个参
	public Boy(String name) {
		this.name = name;
	}

	// 两个参
	public Boy(String name, int age) {
		this.name = name;
		this.age = age;
	}

	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 marry(Girl girl) {
		System.out.println("我想娶" + girl.getName());
	}

	public void shout() {
		if (this.age >= 22) {
			System.out.println("你可以去合法登记结婚了。");
		} else {
			System.out.println("先多谈谈恋爱");
		}
	}

}

public class Girl {

	private String name;
	private int age;

	public Girl(String name, int age) {
		this.name = name;
		this.age = age;
	}

	public void setName(String name) {
		this.name = name;
	}

	public String getName() {
		return name;
	}

	public void marry(Boy boy) {
		System.out.println("我想嫁给" + boy.getName());
		boy.marry(this);
	}

	/**
	 * 
	 * @Description 比较两个对象的大小
	 * @author Charles
	 * @param girl
	 * @return 正数：当前对象大； 负数：当前对象小； 0：当前对象与形参对象相等
	 */
	public int compare(Girl girl) {
		return this.age - girl.age;
	}

}

public class BoyGirlTest {
	public static void main(String[] args) {

		Boy boy = new Boy("罗密欧", 21);
		boy.shout();

		Girl girl = new Girl("朱丽叶", 18);
		girl.marry(boy);

		Girl girl1 = new Girl("祝英台", 19);
		int compare = girl.compare(girl1);
		if (compare > 0) {
			System.out.println(girl.getName() + "大");
		} else if (compare < 0) {
			System.out.println(girl1.getName() + "大");
		} else {
			System.out.println("一样大");
		}
	}
}