Replacing single ‘\’ with ‘\\’ in Java

String.replaceAll(String,String) is regex. String.replace(String,String) will do what you want. The following… String str = “C:\\Documents and Settings\\HUSAIN\\My Documents\\My Palettes”; System.out.println(str); str = str.replace(“\\”, “\\\\”); System.out.println(str); Produces… C:\Documents and Settings\HUSAIN\My Documents\My Palettes C:\\Documents and Settings\\HUSAIN\\My Documents\\My Palettes