How to escape $ in java?

Question

I am trying below code but getting error

String x = \"aaa XXX bbb\";
    String replace = \"XXX\";
    String y = \"xy$z\";
    String z=y.replaceAll(\"$\",          


        

Answer 1

The reason for the error is that after the line:

String z=y.replaceAll("$", "\\$");

The value of z is: xy$z$ what you really want to do is:

String x = "aaa XXX bbb";
String replace = "XXX";
String y = "xy\\$z";            
x = x.replaceFirst(replace, y);
System.out.println(x);

which will output:

aaa xy$z bbb