In the Use Trim example in the chapter that demonstrated how to use the trim( ) method, the if-else-if ladder repeatedly tested the equality of two strings using the equals( ) method. Why didn’t the...

In the Use Trim example in the chapter that demonstrated how to use the trim( ) method, the if-else-if ladder repeatedly tested the equality of two strings using the equals( ) method. Why didn’t the ladder repeatedly test the equality using ==?