Append a single character to a string or char array in java?

Is it possible to append a single character to the end of array or string in java. Example:

private static void /*methodName*/ () {            
    String character = "a"
    String otherString = "helen";
    //this is where i need help, i would like to make the otherString become 
    // helena, is there a way to do this?               
}

Answer

1. String otherString = "helen" + character;

2. otherString +=  character;