String aString = "This will return the letter t";
System.out.println(aString.charAt(aString.length() - 1));

输出应该是:

t

编码快乐!

public char LastChar(String a){
    return a.charAt(a.length() - 1);
}

String aString = "This will return the letter t";
System.out.println(aString.charAt(aString.length() - 1));

输出应该是:

t

编码快乐!

 public char lastChar(String s) {
     if (s == "" || s == null)
        return ' ';
    char lc = s.charAt(s.length() - 1);
    return lc;
}

代码:

public class Test {
    public static void main(String args[]) {
        String string = args[0];
        System.out.println("last character: " +
                           string.substring(string.length() - 1)); 
    }
}

java Test abcdef的输出:

last character: f

public String lastChars(String a) {
if(a.length()>=1{
String str1 =a.substring(b.length()-1);
}
return str1;
}