Java’s character and assorted string classes offer low-level support for pattern matching, but that support typically leads to complex code. For simpler and more efficient coding, Java offers ...

and continue until a new-line character is read. To run Echo so that it inputs from the keyboard and outputs to the screen, issue the following command line: java Echo. Suppose you need a utility ...

you must convert this one-character String into a single Java char with the charAt(0) method. Notice that the code has a check for the newline character, as this will be treated as an input character ...