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Choices:
What will be the result of executing the following code?
// Filename; SuperclassX.java
package packageX;
public class SuperclassX {
protected void superclassMethodX() { }
int superclassVarX; }
// Filename SubclassY.java
1.package packageX.packageY; 2.
3.public class SubclassY extends SuperclassX 4.{
5.SuperclassX objX = new SubclassY();
6.SubclassY objY = new SubclassY();
7.void subclassMethodY() 8.{
9.objY.superclassMethodX();
10.int i;
11.i = objY.superclassVarX; 12.}
13.}
Choices:
A.Compilation error at line 5 B.Compilation error at line 9 C.Runtime exception at line 11 D.None of these
7:
What will be the result of executing the following code?
public static void main(String args[]) {
char digit = 'a';
for (int i = 0; i < 10; i++) {
switch (digit) {
case 'x' : {
int j = 0;
System.out.println(j); }
default : {
int j = 100;
System.out.println(j); } } }
int i = j;
System.out.println(i); }
Choices:
What will be the result of executing the following code?
public static void main(String args[]) {
char digit = 'a';
for (int i = 0; i < 10; i++) {
switch (digit) {
case 'x' : {
int j = 0;
System.out.println(j); }
default : {
int j = 100; System.out.println(j); } } }
int i = j;
System.out.println(i); }
Choices:
A.100 will be printed 11 times.
B.The code will not compile because the variable i cannot be declared twice within the main() method.
C.The code will not compile because the variable j cannot be declared twice within the switch statement.
D.None of these.
8:Which modifier should be applied to a method for the lock of object this to be obtained prior to excution any of the method body?
A.synchronized B.abstract C.final D.static
9:
Give the code fragment: if(x>4){
System.out.println(“Test 1”);} else if (x>9){
System.out.println(“Test 2”);} else {
System.out.println(“Test 3”);}
Which range of value x would produce of output “Test 2”? Give the code fragment: if(x>4){
System.out.println(“Test 1”);} else if (x>9){
System.out.println(“Test 2”);} else {
System.out.println(“Test 3”);}
Which range of value x would produce of output “Test 2”?
A.x<4 B.x>4 C.x>9 D.None
10:
What will happen when you attempt to compile and run the following code?
(Assume that the code is compiled and run with assertions enabled.)
public class AssertTest{
public void methodA(int i){
assert i >= 0 : methodB();
System.out.println(i); }
public void methodB(){
System.out.println(\