single.java

来自「这是清华大学编写的JAVA教材中所有题目的源代码！」· Java 代码 · 共 21 行

class Single
{
	private static final Single onlyOne=new Single();
	
	public static Single getSingle()
	{
		return onlyOne;
	}
	
	private Single()
	{ }
}

class Test
{
	public static void main(String args[])
	{
		//Single one=new Single();
		Single one=Single.getSingle();
	}
}