chap6-2.txt

来自「清华大学出版社经典教材系列」· 文本 代码 · 共 20 行

// 程序6-2
public class TestString{
    public static void main(String args[ ]) {
        String s1="Java", s2="Java"; 		//  NO 1
        String s3=new String(s1); 			//  NO 2

        System.out.println(" s1= "+s1+"\t s2= "+s2+"\t s3="+s3);
        System.out.println(" s1==s2 is "+(s1==s2)); 	//  NO 3
        System.out.println(" s1==s3 is "+(s1==s3)); 	//  NO 4

        s1="ABC";				//  NO 5
        s2="DEFG";				//  NO 6
        System.out.println(" s1= "+s1+"\t  s2= "+s2);
        System.out.println(" s1==s2 is "+(s1==s2)); 	//  NO 7
        s1=s2; 				//  NO 8
        System.out.println(" s1= "+s1+"\t  s2= "+s2);
        System.out.println(" s1==s2 is "+(s1==s2)); 	//  NO 9
    }
}