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Given the following code segment, which of the following is true
?
String s1 = new String("Hi There"); String s2 = new String("Hi There"); String s3 = s1;
I. s1 == s2
II. s1.equals(s2)
III. s1 == s3
IV. s2.equals(s3)
对于字符串,
equals
判断内容而==
判断是否为同一object。2
What does the following code print?
System.out.println("13" + 5 + 3);
表达式从左往右执行,所有的
+
都是连接字符串而非算数加法。2