QUESTION NO: 1
Given:
Class A { }
Class B { }
Interface X { } Interface Y { }
Which two definitions of class C are valid?
Given:
Class A { }
Class B { }
Interface X { } Interface Y { }
Which two definitions of class C are valid?
Correct Answer: B,C
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QUESTION NO: 3
Given: Given:
public class SuperTest {
public static void main(String[] args) { statement1 statement2 statement3
}
}
class Shape {
public Shape() {
System.out.println("Shape: constructor");
}
public void foo() {
System.out.println("Shape: foo");
}
}
class Square extends Shape {
public Square() {
super();
}
public Square(String label) {
System.out.println("Square: constructor");
}
public void foo() {
super.foo();
}
public void foo(String label) {
System.out.println("Square: foo");
}
}
}
}
What should statement1, statement2, and statement3, be respectively, in order to produce the result?
Shape: constructor
Square: foo
Shape: foo
Given: Given:
public class SuperTest {
public static void main(String[] args) { statement1 statement2 statement3
}
}
class Shape {
public Shape() {
System.out.println("Shape: constructor");
}
public void foo() {
System.out.println("Shape: foo");
}
}
class Square extends Shape {
public Square() {
super();
}
public Square(String label) {
System.out.println("Square: constructor");
}
public void foo() {
super.foo();
}
public void foo(String label) {
System.out.println("Square: foo");
}
}
}
}
What should statement1, statement2, and statement3, be respectively, in order to produce the result?
Shape: constructor
Square: foo
Shape: foo
Correct Answer: E
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QUESTION NO: 4
Given:
Which statement, when inserted into line 5, is valid change?
Given:
Which statement, when inserted into line 5, is valid change?
Correct Answer: A
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QUESTION NO: 5
Given:
public class Test {
public static void main(String[] args) {
int arr[] = new int[4];
arr[0] = 1;
arr[1] = 2;
arr[2] = 4;
arr[3] = 5;
int sum = 0;
try {
for (int pos = 0; pos <= 4; pos++) {
sum = sum + arr[pos];
}
} catch (Exception e) {
System.out.println("Invalid index");
}
System.out.println(sum); } }
What is the result?
Given:
public class Test {
public static void main(String[] args) {
int arr[] = new int[4];
arr[0] = 1;
arr[1] = 2;
arr[2] = 4;
arr[3] = 5;
int sum = 0;
try {
for (int pos = 0; pos <= 4; pos++) {
sum = sum + arr[pos];
}
} catch (Exception e) {
System.out.println("Invalid index");
}
System.out.println(sum); } }
What is the result?
Correct Answer: D
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QUESTION NO: 8
Given:
public class App { // Insert code here System.out.print("Welcome to the world of Java"); }
}
Which two code fragments, when inserted independently at line // Insert code here, enable the program to execute and print the welcome message on the screen?
Given:
public class App { // Insert code here System.out.print("Welcome to the world of Java"); }
}
Which two code fragments, when inserted independently at line // Insert code here, enable the program to execute and print the welcome message on the screen?
Correct Answer: B,C
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QUESTION NO: 9
Which two will compile, and can be run successfully using the command:
Java fred1 hello walls
Which two will compile, and can be run successfully using the command:
Java fred1 hello walls
Correct Answer: A,D
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QUESTION NO: 10
Given:
What code should be inserted?
Given:
What code should be inserted?
Correct Answer: B
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QUESTION NO: 12
Given the code fragment:
Int [] [] array = {{0}, {0, 1}, {0, 2, 4}, {0, 3, 6, 9}, {0, 4, 8, 12, 16}};
Systemout.printIn(array [4] [1]);
System.out.printIn (array) [1] [4]);
What is the result?
Given the code fragment:
Int [] [] array = {{0}, {0, 1}, {0, 2, 4}, {0, 3, 6, 9}, {0, 4, 8, 12, 16}};
Systemout.printIn(array [4] [1]);
System.out.printIn (array) [1] [4]);
What is the result?
Correct Answer: D
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QUESTION NO: 13
Given: What is the result?
Given: What is the result?
Correct Answer: C
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QUESTION NO: 14
Given:
public class X {
static int i;
int j;
public static void main(String[] args) {
X x1 = new X();
X x2 = new X();
x1.i = 3;
x1.j = 4;
x2.i = 5;
x2.j = 6;
System.out.println(
x1.i + " "+
x1.j + " "+
x2.i + " "+
x2.j);
} } What is the result?
Given:
public class X {
static int i;
int j;
public static void main(String[] args) {
X x1 = new X();
X x2 = new X();
x1.i = 3;
x1.j = 4;
x2.i = 5;
x2.j = 6;
System.out.println(
x1.i + " "+
x1.j + " "+
x2.i + " "+
x2.j);
} } What is the result?
Correct Answer: A
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