设计模式-单例模式code

package singeton;


import java.security.securerandom;

/**
 * @author zero
 * @since 2019-08-13.
 * description:
 */
public class hungrysingleton {
    private static final hungrysingleton singleton = new hungrysingleton();
    private final int id = new securerandom().nextint();

    private hungrysingleton() {
    }

    public static hungrysingleton getsingleton() {
        return singleton;
    }

    public int dosomething() {
//        system.out.println("i'm hungrysingeton " + id + "!");
        return id;
    }
}

package singeton;

import java.security.securerandom;

/**
 * @author zero
 * @since 2019-08-13.
 * description:
 */
public class lazysingleton {
    private static lazysingleton singeton = null;
    private final int id = new securerandom().nextint();

    private lazysingleton() {
    }

    public static synchronized lazysingleton getsingleton() {
        if (singeton == null) {
            singeton = new lazysingleton();
        }
        return singeton;
    }

    public int dosomething() {
//        system.out.println("i'm lazysingeton " + id + "!");
        return id;
    }

}