Use String#replace().
To replace them with spaces (as per your question title):
System.out.println("I don't like these \"double\" quotes".replace("\"", " "));
The above can also be done with characters:
System.out.println("I don't like these \"double\" quotes".replace('"', ' '));
To remove them (as per your example):
System.out.println("I don't like these \"double\" quotes".replace("\"", ""));
You can do it like this:
string tmp = "Hello 'World'";
tmp.replace("'", "");
But that will just replace single quotes. To replace double quotes, you must first escape them, like so:
string tmp = "Hello, \"World\"";
tmp.replace("\"", "");
You can replace it with a space, or just leave it empty (I believe you wanted it to be left blank, but your question title implies otherwise.
You don't need regex for this. Just a character-by-character replace is sufficient. You can use String#replace() for this.
String replaced = original.replace("\"", " ");
Note that you can also use an empty string "" instead to replace with. Else the spaces would double up.
String replaced = original.replace("\"", "");
Strings are immutable, so you need to say
sInputString = sInputString("\"","");
not just the right side of the =
Source: Stackoverflow.com