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The following Java method was designed to output the reversal of the input String s:public static String reverseString(String s) {  if (s==null || s.length()

What is the output of the following code?public class Exam { public static void main (String[] args) { double[] arr = new double[5]; try { arr[2] = 0.0; int x = 3 / (int)arr[3]; System.out.println(“abc”); } catch (Exception e) { System.out.println(“x=”); } }}

Evaluate the following postfix expression: 7,2,*,9,3,/,4,-,* [BLANK-1]

What is the running time of the following method in terms of its input? void bar(int K) {    int Z=K*K;    int count=1;    for (int i=0; i

The for statement requires an initialization, a condition, and the increment to be specified.

What is the running time of the following method in terms of its input? void foo(int N) {    int k = 0;    int j = 10;    int sum=0;    while (k

What are the semantics of the following method? public static int foo(int n) {  int num = 0;  boolean b = false;  for (int i=2; i

Given the following array declaration:int[] a = new int[6];What is the index of the last element in the array?

What is the output of the following code?public class Exam {    public static void main (String[] args) {        double x = 1;        try {            x = getVal(0);            System.out.println(“x=”+x);        } catch (ArrayIndexOutOfBoundsException e) {            System.out.print(“%x=”);        } catch (Exception e) {            System.out.print(“!x=”);        } finally {            System.out.println(x);        }    }    public static double getVal(int x) {        return 1/x;    }} [BLANK-1]

public class Exam { public static int changeArr(int arr) { arr = arr + 1; return arr + 2; } public static void main(String args[]) { int[] arr = {0, 1, 2}; changeArr(arr[0]); System.out.println(arr[2]); }}