1.What output is produced by the following statement? System.out.println("abc\ndef"); 2. What output is produced by the following statement?  System.out.println("abc\\ndef"); 3. What output is...

1.What output is produced by the following statement?

System.out.println("abc\ndef");

2. What output is produced by the following statement?

 System.out.println("abc\\ndef");

3. What output is produced by the following statements?

String test = "Hello John";

test = test.toUpperCase();

System.out.println(test);