What is the output produced by the following?

String test = "Hello Tony"; test = test.toUpperCase(); System.out.println(test);

What is the output of the following two lines of Java code?

System.out.println("2 + 2 = " + (2 + 2)); System.out.println("2 + 2 = " + 2 + 2);

The following code is supposed to output the string in lowercase letters but it has an error. What is wrong? How can the code be corrected?

String test = "WHY ARE YOU SHOUTING?"; test.toLowerCase(); System.out.println(test);