JAVA

delete ending part of the string java

//To delete starting from "opened"
String str ="13 opened by someone";

String result = str.substring(0,str.lastIndexOf(" opened"));

Delete end element in string java

public String method(String str) {
    if (str != null && str.length() > 0 && str.charAt(str.length() - 1) == 'x') {
        str = str.substring(0, str.length() - 1);
    }
    return str;
}