string remove last character

1String s = "Hello Worlds";
2String end = "";
3end = s.substring((0, s.length()-1));

1private static String removeLastChar(String str) {
2    return str.substring(0, str.length() - 1);
3}

1let str = "12345.00";
2str = str.substring(0, str.length - 1);
3

1str = str.substring(0, str.length() - 1);

1public static String removeLastCharacter(String str) {   
2	String result = null;   
3    if ((str != null) && (str.length() > 0)) {      
4    	result = str.substring(0, str.length() - 1);   
5    }   
6    
7    return result;
8}

1public String method(String str) {
2    if (str.charAt(str.length()-1)=='x'){
3        str = str.replace(str.substring(str.length()-1), "");
4        return str;
5    } else{
6        return str;
7    }
8}
9