is there any way to decode string? [duplicate]

Answer 1

Have a look at the StringEscapeUtils class in the Apache Commons library. (Specifically the unescapeHtml method).

import org.apache.commons.lang.StringEscapeUtils;

public class Test {
    public static void main(String[] args) {
        String str = "äså";
        System.out.println(StringEscapeUtils.unescapeHtml(str)); // prints äså
    }
}