1、private私有化 只能在本类使用
2、提供公有方法来设置和获取属性值 getter setter
构造方法:
1、都是公共的
2、名字和类名一致
3、无返回值
4、不能写void
方法重载:
同名同类不同参(个数 类型 顺序)
代码如下:
public class Frog {
private boolean mammal=false;
private boolean canivorous=false;
private int numOflegs=4;
private int mood=1;
private boolean chanluan=true;
private boolean yousai=true;
public boolean isMammal(){
return(mammal);
}
public boolean isCarnivorous(){
return(canivorous);
}
public int getNumberOflegs(){
return (numOflegs);
}
public boolean isChanluan(){
return(chanluan);
}
public boolean isYousai(){
return(yousai);
}
public String sayHello(String sayHello){
return("呱呱呱");
}
public void setMood(int mood){
this.mood=mood;
}
public String sayHello(){
return("呱呱");
}
public String sayHello(int mood){
this.setMood(mood);
switch(this.mood){
case 1:
return("呱呱呱");
case 2:
return("扑腾一声跳入水中");
default:
return("呱呱");
}
}
public Frog(boolean mammal,boolean carnivorous,int numOfLegs,int mood,boolean luansheng,boolean yousai){
this.mammal=mammal;
this.canivorous=canivorous;
this.numOflegs=numOfLegs;
this.mood=1;
this.chanluan=luansheng;
this.yousai=yousai;
}
}
public class Frogtext {
public static void main(String[] args){
Frog frog1=new Frog(false,false,4,1,true,true);
if(frog1.isMammal()){
System.out.println("青蛙是哺乳动物");
}else{
System.out.println("青蛙不是哺乳动物");
}
if(frog1.isCarnivorous()){
System.out.println("青蛙是肉食动物");
}else{
System.out.println("青蛙不是肉食动物");
}
System.out.println("青蛙通常的情况下，和人打招呼的方式为："+frog1.sayHello());
System.out.println("青蛙情绪好的情况："+frog1.sayHello(1));
System.out.println("青蛙受到惊吓的时候会："+frog1.sayHello(2));
System.out.println("青蛙有几条腿："+frog1.getNumberOflegs()+"条腿");
if(frog1.isYousai()){
System.out.println("青蛙有腮");
}else{
System.out.println("青蛙无腮");
}
if(frog1.isChanluan()){
System.out.println("青蛙产卵");
}else{
System.out.println("青蛙不产卵");
}
}
}
