HR자바 Java Singleton Pattern

개요

HR자바 Java Singleton Pattern

• https://www.hackerrank.com/challenges/java-singleton/problem
• 참고: 싱글톤

해커랭크 Java

#	문제	비고
HR자바 Advanced e
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56	HR자바 Prime Checker
57	HR자바 Java Factory Pattern
58	HR자바 Java Singleton Pattern
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60	HR자바 Java Annotations
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64	HR자바 Java SHA-256

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Java

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import java.io.*;
import java.util.*;
import java.text.*;
import java.math.*;
import java.util.regex.*;
import java.lang.reflect.*;

class Singleton {
    private Singleton() {}
    private static final Singleton INSTANCE = new Singleton();
    public static Singleton getSingleInstance() {
        return INSTANCE;
    }
    public String str;
}