flutter string cut from end code example

Example 1: flutter remove last caracter from string

public static String removeLastCharacter(String str) {   
	String result = null;   
    if ((str != null) && (str.length() > 0)) {      
    	result = str.substring(0, str.length() - 1);   
    }   
    
    return result;
}

Example 2: flutter substring

var string = 'dartlang';
string.substring(1);    // 'artlang'
string.substring(1, 4); // 'art'