how to remove particular substring from string code example

Example 1: remove a string from a string java

str = "manchester united (with nice players)"
matched = str.match(/.*(?=\()/)
str.replace(matched[0].strip) if matched

Example 2: remove part of string java

// Works only if you have a certain character at which you want to cut
String text = "Image.png";

String[] cutText = text.split("\\.");

// cutText[0] has value "Image"
// cutText[1] has value "png"