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Q1. Given the code fragment: Which code fragment prints blue, cyan, ? A. Option A B. Option B C. Option C D. Option D View AnswerAnswer: A Q2. Which statement is true about the default constructor of a top-level class? A. It can take arguments. B. It has private access modifier in its declaration. C. It can be overloaded. D. The default constructor of a subclass always invokes the no
Q1. Given: What is the output? A. 1Z0 B. 1Z0-808 C. An exception will be thrown. D. Compilation fails due to error at line 3. E. Compilation tails due to error at line 4. View AnswerAnswer: E Explanation: Option E is the correct answer. Code fails to compile because there is no method called concert in StringBuilder class. The concert method is in String class. Hence option E is correct
Q1. Given the code fragment? public class Test { public static void main(String[] args) { Test t = new Test(); int[] arr = new int[10]; arr = t.subArray(arr,0,2); } // insert code here } Which method can be inserted at line // insert code here to enable the code to compile? A. public int[] subArray(int[] src, int start, int end) { return src; } B. public int subArray(int src, int sta
Q1. Given: What is the result? A. hEllOjAvA! B. Hello java! C. Out of limits hEllOjAvA! D. Out of limits View AnswerAnswer: C Q2. Which three statements are benefits of encapsulation? A. Allows a class implementation to change without changing t he clients B. Protects confidential data from leaking out of the objects C. Prevents code from causing exceptions D. Enables the class implem
Q1. Given the code fragment: What is the result? A. Match 1 B. Match 2 C. No Match D. A NullPointerException is thrown at runtime. View AnswerAnswer: B Explanation: it will compare the string contents of the StringBuilder with string object. Q2. Given: What is the result? A. 3 4 5 6 B. 3 4 3 6 C. 5 4 5 6 D. 3 6 4 6 View AnswerAnswer: C Q3. Given: What will be the output? A.
Q1. Given: Which option enables the code to compile? A. Option A B. Option B C. Option C D. Option D View AnswerAnswer: C,D Q2. Given: public class TestOperator { public static void main(String[] args) { int result = 30 -12 / (2*5)+1; System.out.print("Result = " + result); } } What is the result? A. Result = 2 B. Result = 3 C. Result = 28 D. Result = 29 E. Result = 30 View
Q1. Given: public class Test1 { static void doubling (Integer ref, int pv) { ref =20; pv = 20; } public static void main(String[] args) { Integer iObj = new Integer(10); int iVar = 10; doubling(iObj++, iVar++); System.out.println(iObj+ ", "+iVar); What is the result? A. 11, 11 B. 10, 10 C. 21, 11 D. 20, 20 E. 11, 12 View AnswerAnswer: A Explanation: The code doubling(iObj++, iV
Q1. What is the name of the Java concept that uses access modifiers to protect variables and hide them within a class? A. Encapsulation B. Inheritance C. Abstraction D. Instantiation E. Polymorphism View AnswerAnswer: A Q2. Given the definitions of the MyString class and the Test class: What is the result? A. Option A B. Option B C. Option C D. Option D View AnswerAnswer: C Q3.
Q1. Given the code fragment: What is the result? A. Jesse 25 Walter 52 B. Compilation fails only at line n1 C. Compilation fails only at line n2 D. Compilation fails at both line n1 and line n2 View AnswerAnswer: D Q2. Given the code fragment: What is the result? A. 28false29 true B. 285 < 429 true C. true true D. compilation fails View AnswerAnswer: C Q3. Given the code frag
Q1. Given: What is the result? A. 1 1 1 B. 1 2 3 C. 2 3 4 D. Compilation fails E. The loop executes infinite times View AnswerAnswer: E Q2. Which two statements are true for a two-dimensional array of primitive data type? A. It cannot contain elements of different types. B. The length of each dimension must be the same. C. At the declaration time, the number of elements of the
Q1. Which two are Java Exception classes? A. SercurityException B. DuplicatePathException C. IllegalArgumentException D. TooManyArgumentsException View AnswerAnswer: A,C Q2. Given: public class ScopeTest { int j, int k; public static void main(String[] args) { ew ScopeTest().doStuff(); } void doStuff() { nt x = 5; oStuff2(); System.out.println("x"); } void doStuff2() { nt y = 7
Q1. Given: What is the result? A. C B A B. C C. A B C D. Compilation fails at line n1 and line n2 View AnswerAnswer: C Q2. Given: A. X XX B. X Y X C. Y Y X D. Y YY View AnswerAnswer: D Q3. Given: public class TestField { int x; int y; public void doStuff(int x, int y) { this.x = x; y =this.y; } public void display() { System.out.print(x + " " + y + " : "); } public sta
Q1. Given the following classes: Which two options fail to compile when placed at line n1 of the main method? A. employee.salary = 50_000; B. director.salary = 80_000; C. employee.budget = 200_000; D. manager.budget = 1_000_000; E. manager.stockOption = 500; F. director.stockOptions = 1_000; View AnswerAnswer: C,E Q2. Given: What is the result? A. 97 98 99 100 null null null B. 91 9
Q1. What is the proper way to defined a method that take two int values and returns their sum as an int value? A. int sum(int first, int second) { first + second; } B. int sum(int first, second) { return first + second; } C. sum(int first, int second) { return first + second; } D. int sum(int first, int second) { return first + second; } E. void sum (int first, int second) { return first + s