Delete everything after part of a string

Question

I have a string that is built out of three parts. The word I want the string to be (changes), a seperating part (doesn\'t change) and the last part which changes. I want to

Answer 1

The apache commons StringUtils provide a substringBefore method

StringUtils.substringBefore("Stack Overflow - A place to ask stuff", " - ")

Answer 2

For example, you could do:

String result = input.split("-")[0];

or

String result = input.substring(0, input.indexOf("-"));

(and add relevant error handling)

Answer 3

This will do what you need:

newValue = oldValue.substring(0, oldValue.indexOf("-");

Answer 4

You can use this

String substr = mysourcestring.substring(0,mysourcestring.indexOf("-"));

Answer 5

you can my utils method this action..

public static String makeTwoPart(String data, String cutAfterThisWord){
    String result = "";

    String val1 = data.substring(0, data.indexOf(cutAfterThisWord));

    String va12 = data.substring(val1.length(), data.length());

    String secondWord = va12.replace(cutAfterThisWord, "");

    Log.d("VAL_2", secondWord);

    String firstWord = data.replace(secondWord, "");

    Log.d("VAL_1", firstWord);

    result = firstWord + "\n" + secondWord;


    return result;
}`

Answer 6

Kotlin Solution

Use the built-in Kotlin substringBefore function (Documentation):

var string = "So much text - no - more"
string = string.substringBefore(" - ") // "So much text"

It also has an optional second param, which is the return value if the delimiter is not found. The default value is the original string

string.substringBefore(" - ", "fail")  // "So much text"
string.substringBefore(" -- ", "fail") // "fail"
string.substringBefore(" -- ")         // "So much text - no - more"