stringequals.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 20 行

public class StringEquals
{
	public static void main(String args[])
	{
		String s1="hello";
		String s2="hello";
		String s3=new String("hello");
		String s4=new String(s1);
		String s5=s1;
		
		System.out.println("s1 equals s2:"+s1.equals(s2));
		System.out.println("s1 == s2:"+(s1==s2));//字符串常量只存储一次
		System.out.println("s1 equals s3:"+s1.equals(s3));
		System.out.println("s1 == s3:"+(s1==s3));
		System.out.println("s1 equals s4:"+s1.equals(s4));
		System.out.println("s1 == s4:"+(s1==s4));
		System.out.println("s1 equals s5:"+s1.equals(s5));
		System.out.println("s1 == s5:"+(s1==s5));
	}
}