How do i replace " character in Java?

I have

String a = "data=\"0\"1\"1\"1\"1\"0\"0\"0\"0\"0\"0\"1\"1\"1\"1\"0\"0\"0\"0\"0\"1\"1\"1\"1\"1开发者_如何学JAVA\\\\";

How can i replace

• " to \"
• and \ to \\

?

String result = a.replace("\"", "\\\"");

OR

String result = a.replace(""", "\"");

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String result = a.replace("\\","\\\\").replace("\"", "\\\"");

This would first replace all \ with \\ and then all " with \" if that is what you want.

Note that doing it the other way round would result in " being replaced with \\" in the end, since first it get replaced with \" and then the \ would be replaced with \\ resulting in \\".

Additional note: your data string is not well-formed and should not compile: it ends in \" which is not a valid string literal delimiter (the literal ends in \\\\\" which would be the string data \\") - change that to an even number of slashes or add another " to the end in order to fix that.

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The former. The latter is not well-formed Java code.

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Since "String result = a.replace(""", "\"");" does not compile, does that answer your question?

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you a string error,Less a quote

String a = "data=\"0\"1\"1\"1\"1\"0\"0\"0\"0\"0\"0\"1\"1\"1\"1\"0\"0\"0\"0\"0\"1\"1\"1\"1\"1\\\"";

System.out.println(a.replace("\"", "\\\""));