In Java

Using the following declarations, what is the output of each snippet of code?

String s1 = new String("12345");

String s2 = "abcde";

String s3 = "ABCDE";

String s4 = "Java is Awesome";

StringBuilder sb1 = new StringBuilder();

StringBuilder sb2 = new StringBuilder(s4);

1) System.out.println(s4.lenght());

2) System.out.println(s1.charAt(2));

3) if (s2.equals(s3)) System.out.println("same"); else System.out.println("different");

4) if (s1 == "123456789") System.out.println("same"); else System.out.println("different");

5) if (s1.startsWith("234", 1)) System.out.println("yes"); else System.out.println("no");

6) System.out.println(s4.lastIndexOf('a'));

7) System.out.println(s4.substring(8, 11));

8) sb1.append(s3).insert(0, s2).append(s1); System.out.println(sb1);

9) String[] tokens = s4.split(" "); for (String token : tokens) System.out.printf("%s--", token); System.out.println();

10) sb2.setCharAt(4, '-'); System.out.println(sb2);