Java-封装-private

类1
package cn.sxt.oo2;
/**
 * 测试封装
 * @author 86176
 *
 */
public class TestEncapsulation{
private int age;
String name;
protected int height;

public void setAge(int age){
	if(age>=1&&age<=130){
		this.age=age;
		System.out.println("输入年龄成功！");
	}else{
		System.out.println("请输入正确的年龄！");
	}
}

public int Getage(){
	return this.age;
}


public String getName() {
	return name;
}

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

public int getHeight() {
	return height;
}

public void setHeight(int height) {
	this.height = height;
}

void sayAge(){
	System.out.println(age);
}
}

类2
package cn.sxt.oo;
import cn.sxt.oo2.TestEncapsulation;
public class Test {
public static void main(String[] args){
	TestEncapsulation t1= new TestEncapsulation();
	t1.setAge(155);
	System.out.println(t1.Getage());
	t1.setAge(18);
	System.out.println(t1.Getage());
	}
}

运行结果：
请输入正确的年龄！
0
输入年龄成功！
18

说明：