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设计模式-单例模式code

程序员文章站 2022-11-06 17:36:33
package singeton;import java.security.SecureRandom;/** * @author Zero * @since 2019-08-13. * Description: */public class HungrySingleton { private sta ......
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;
}

}