remove all characters before a specific character in java

/**
 * @author lautturi.com 
 * Java example: delete all characters before a specific character
 */

import java.util.*;

public class Lautturi {
	public static void main(String[] args) {

		String config = "field=value";
		String str = config.substring(config.indexOf("=")+1);
		str.trim();

		System.out.println(str);
	}
}