1
public class Puppy{
public Puppy(String name){//构造器实例
System.out.println("小狗的名字是 : " + name );
}
public static void main(String []args){
Puppy myPuppy = new Puppy( "tommy" );
}
}
2
public class Puppy{
public Puppy(){}// 构造器无参 构造器有参无参
public Puppy(String name){}// 构造器仅一个参数
}
3
快捷键 alt N ------X H
public class Person{
String name;
int age;
public void setName(String name){ //采用set传递值 get获取值
this.name=name;
}
public String getName(){
return name;
}
public void setAge(int age){
this.age=age;
}
public int getAge(){
return age;
}
public static void main(String[] args){
Person p1=new Person();
p1.name="shuai";//非隐私数据可直接传递值
System.out.println(p1.getName());
}
}
4
public class Person{
String name;
int age;
public void setName(String name){//构造器传递值
this.name=name;
}
public String getName(){
return name;
}
public void setAge(int age){
this.age=age;
}
public int getAge(){
return age;
}
public static void main(String[] args){
Person p1=new Person();
//这里也可以这样：Person p1=new Person("sabi"); 构造器传递值
p1.setName("sabi");
System.out.println(p1.getName());
}
}
5
public class Person{
private String name;
private int 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 static void main(String[] args){
Person p1=new Person();
p1.setName("sabi");//隐私数据用成员接口传递值
System.out.println(p1.getName());
}
}
6
public class Test36{
public static void main(String[] args){
Person p1=new Person();//调用其他类
p1.name="zhao";
System.out.println(p1.getName());
}
}
class Person{//类外定义类
String name;
public String getName(){
return name;
}
}
7
public class Test36{
public static void main(String[] args){
Person p1=new Person();
p1.setName("ni");
System.out.println(p1.getName());
}
}
class Person{
String name;
public void setName(String name){this.name=name;}//类外set get
public String getName(){return name;}
}
8
public class Test36{
public static void main(String[] args){
Person p1=new Person("nihao");
System.out.println(p1.getName());
}
}
class Person{
String name;
public Person(String name){this.name=name;}//类外构造器
public String getName(){
return name;
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