正则表达式捕获不等于相等值的字符串[重复]

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How do I compare strings in Java? 23 answers

如何比较Java中的字符串? 23个答案

Both strings appear to be the same when printed to the console, but not when compared using "=="

打印到控制台时,两个字符串看起来都相同,但使用“==”进行比较时则不一样

What am i doing wrong here?

我在这做错了什么?

String message = "Rejected | Ref ID: CaptureMe | Name:";  

Pattern pattern = Pattern.compile("\\bRef ID:\\s+(\\S+)");     

Matcher matcher = pattern.matcher(message);

String matchedRef = matcher.group(1); 
System.out.print(matchedRef);

Prints: CaptureMe

String myRef = "CaptureMe";

if(matchedRef == myRef){
System.out.print(true);
}
else{
System.out.print(false);
}

Prints: FALSE

1 个解决方案

#1

To compare strings you need to use the equals() method, not the == operator.

要比较字符串,您需要使用equals()方法,而不是==运算符。

if(matchedRef.equals(myRef)){
    System.out.print(true);
}
else{
    System.out.print(false);
}

You can read more about String comparisons in this question.

您可以在此问题中阅读有关字符串比较的更多信息。

#1