Unable to replace in String java ?

Question

I am unable to replace part of the substring in my code ? I want to get rid of the unwanted characters but i still get the same output ?

String BusDetails = "ROUTE 3  — CLEARBROOK-UFV GOLINE TO UFV" ;
System.out.println("BusDetails before"+BusDetails);
BusDetails.replaceAll("—", "");
System.out.println("BusDetails After"+BusDetails);


// Output 
BusDetails before ROUTE 3  — CLEARBROOK-UFV GOLINE TO UFV
BusDetails After ROUTE 3  — CLEARBROOK-UFV GOLINE TO UFV

Answer 1

Java strings are immutable. You need to do this:

BusDetails = BusDetails.replaceAll("—", "");

Also: "standard practice" is to name variables with a lowercase first letter busDetails .

Answer 2

BusDetails= BusDetails.replaceAll("—", "");

你忘了重新分配变量

Answer 3

You need to put 'replaced value' into another variable. Example below compiled code:

String busDetails = "ROUTE 3  — CLEARBROOK-UFV GOLINE TO UFV" ;
System.out.println("BusDetails before :"+busDetails);
String replacetxt = busDetails.replaceAll("— ", "");
System.out.println("BusDetails After :"+replacetxt);