简单的java单例

1.简单实用方法

package com.home.action.test.single;

public class Person {
    public static final Person INSTANCE = new Person();
    private int age;
    
    private Person(){
        
    }
    
    public void setAge(int age){
        this.age = age;
    }
    
    public int getAge(){
        return this.age;
    }
}

package com.home.action.test.single;

public class Test {

    /**
     * @param args
     */
    public static void main(String[] args) {
        Person person = Person.INSTANCE;
        person.setAge(12);
        
        System.out.println(person.getAge());

        CarInfo car = DefaultCar.getInstance();
        car.showMessage();
    }

}

2.简单实例

package com.home.action.test.mode.single;

public abstract class DefaultCar {
    private static CarInfo instance = new CarInfo();
    
    public static CarInfo getInstance(){
        return instance;
    }
    
    static void reset(){
        instance = new CarInfo();
    }
}

评论

1 楼 BabyDuncan 2013-05-30