Do I always need to escape metacharacters in a string that is not a “literal”?

Use Pattern.quote(String):

public static String quote(String s)

Returns a literal pattern String for the specified String.

This method produces a String that can be used to create a Pattern that would match the string s as if it were a literal pattern.

Metacharacters or escape sequences in the input sequence will be given no special meaning.

Parameters:
    s - The string to be literalized
Returns:
    A literal string replacement
Since:
    1.5

Answer:1

You can use

java.util.regex.Pattern.quote(java.lang.String)

to escape meta characters used by regular expressions.

Answer:2

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