This code should give output as the given format [closed]

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This is code in java for string.

int a=6;
int b=7;

System.out.println(a+"\"+b);

I want to comes the output is 6\7.

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write this code:

System.out.println(a+"\\"+b);

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In literal Java strings the backslash is an escape character. The literal string "\\" is a single backslash.

In regular expressions, the backslash is also an escape character. The regular expression \\ matches a single backslash. This regular expression as a Java string, becomes "\\\\". That's right: 4 backslashes to match a single one.