Java Main MCQ01 Assessment PDF

# Java Main MCQ01 Assessment ## Section 1 of 1 **Question # 1** Which of the following is not part of the Agile Manifesto? - Individuals and interactions over Processes and Tools - Working software over Following a plan - Customer Collaboration over Contract Negotiations - **Responding to change...

# Java Main MCQ01 Assessment ## Section 1 of 1 **Question # 1** Which of the following is not part of the Agile Manifesto? - Individuals and interactions over Processes and Tools - Working software over Following a plan - Customer Collaboration over Contract Negotiations - **Responding to change over Following a plan** **Question # 2** Match the scrum roles with the corresponding responsibilities. - **Product Owner:** Creates and maintains product backlog. - **Scrum Master:** Conducts daily stand-up meetings. - **Scrum Team:** Develops working software. **Question # 3** Choose from below the CORRECT statements [Choose 2] - **Java Interpreter converts Java Program into bytecode and executes them.** - Java Interpreter converts byte code into machine code and executes them. - Java Interpreter does the translation all at once. - **Java Compiler does the translation all at once.** **Question # 4** Choose from below the INVALID loop - for(int i = 2; i < 20; i = i - 3) - **for(int a = 6; a == 5; a++)** - for(int i = 3; i <= 99; i = i + 2) - for(int a = 1, b = 2; a < 10; a++, b++) **Question # 5** Refer the class given below: ```java class Customer { private int customerId; private String customerName; // ... } ``` Identify the correct parameterized constructor declarations [Choose 2]: - **`public Customer(int customerId) {`** `this.customerId = customerId;` `}` - **`public Customer(String customerName) {`** `this.customerName = customerName;` `}` - `public void Customer(String customerName) {` `}` - `public void Customer(int customerId, String customerName) {` `this.customerId = customerId;` `this.customerName = customerName;` `}` **Question # 6** Choose from below the VALID loop - **for(int i = 2; i < 20; i = i - 3)** - for(int a = 6; a == 5; a++) - for(int i = 3; i <= 99; i = i + 2) - for(int a = 1, b = 2; a < 10; a++, b++) **Question # 7** Refer the code given below: ```java public class Tester { public static void main(String[] args) { String s = "helloo"; int count = 0; char c[] = s.toCharArray(); for (int i = 0; i < c.length; i++) { int first = s.indexOf(c[i]); int last = s.lastIndexOf(c[i]); if (first == last) { count++; } } System.out.println(count); } } ``` Choose from below a valid option - **2** - 3 - 1 - 4 **Question # 8** Consider the code given below: ```java class Base{ public int a = 3; public void addFive(){ a += 5; System.out.print("Base "); } } class Derived extends Base{ public int a = 8; public void addFive(){ this.a += 5; System.out.print("Derived "); } } public class Test{ public static void main(String[] args){ Base f = new Derived(); f.addFive(); System.out.println(f.a); } } ``` Choose the best option: - **Derived 13** - Derived 3 - Base 3 - Base 8 **Question # 9** Refer the code given below: ```java public class Tester { public static void main(String[] args) { String test = "abcd"; String str[] = test.split(" "); //Line 1 for (int i = 0; i < str.length; i++) { System.out.print(str[i].charAt(0) - 32 + " "); } } } ``` Choose from below the valid option: - 65 66 67 68 - **ABCD** - Compilation fails at Line 1 - Runtime Exception **Question # 10** Choose from below CORRECT statement - **Statement A: Every instance of the class shares the class variable, which is in one fixed memory location.** - Statement B: Every instance of class gets separate copy of instance variable. **Question # 11** Refer the code given below: ```java public class A{ static int c = 0; public static void main(String[] args){ A a1 = c(); A a2 = c(a1); A a3 = c(a2); A a4 = c(a3); } private A(){ System.out.print("c=" + c + " "); } static A c(){ return c++ >= 0 ? new A(): null; } static A c(A a){ // ... } } ``` Choose the best option: - **c=1 c=2** - c=0 c=1 - c=0 c=0 - c=1 c=1 **Question # 12** Refer the code given below: ```java interface I1 { int i = 1111; void method1(); } interface I2 { int i = 2222; public void method1(); } interface I3 extends I1, I2 { int i = 3333; public void method1(); } class A implements I3 { public void method1() { System.out.println(i); } } ``` Choose the best option: - **3333 1111 2222** - 3333 3333 3333 - 3333 3333 1111 - 3333 2222 1111 **Question # 13** What will be the output of the following Java code? ```java public class Print { public static void main(String[] args) { try { System.out.print("Java" + 1 / 0); } catch(ArithmeticException e){ System.out.print("Standard Edition"); } } } ``` Choose one correct answer. - **Standard Edition** - Java - JavaStandard Edition - Java Standard Edition **Question # 14** What will be the output of the following code snippet? ```java public static void main(String[] args) { try { int i; for (i = 0; i < 1; i++) { continue; } System.out.print(i + " "); } finally { System.out.println("Continue"); } } ``` Choose one correct answer. - **0 Continue** - 1 Continue - Continue - 0 1 Continue **Question # 15** Consider below code snippet. What other values can be added to mySet without the program causing any errors? Select all that apply. ```java public static void main(String[] args) { Set mySet = new HashSet(); mySet.add("Z"); mySet.add("P"); mySet.add("M"); } ``` - **`mySet.add(null);`** - **`mySet.add(12.56);`** - **`mySet.add("A");`** - **`mySet.add(false);`** **Question # 16** Consider the following program and choose the best option: ```java class ExamThread extends Thread { public void run() { System.out.print("Run! "); } } public static void main(String args[]) throws InterruptedException { Thread examThread = new ExamThread(); examThread.start(); System.out.print("Eat! "); examThread.join(); System.out.print("Relax! "); } ``` Choose the best option: - When executed, it prints one of the following: Run! Eat! Relax! or Run! Relax! Eat! - When executed, it prints one of the following: Eat! Run! Relax! or Run! Eat! Relax! - When executed, it prints one of the following: Eat! Run! Relax! Run! Eat! Relax! or Relax! Eat! Run! - **The program results in compiler error(s).** **Question # 17** Which keyword ensures that, at a time only one thread should execute the method? Choose the best option: - sleep - final - static - **synchronized** - void **Question # 18** What data would be written in the file after execution of below snippet of code: ```java public static void main(String[] args) throws IOException { try{ FileOutputStream fout=new FileOutputStream("file.txt"); fout.write(65); fout.close(); } catch(Exception e){ System.out.println(e); } } ``` Choose the best option - A - B - C - D **Question # 19** Which modifiers are allowed to the methods of a Java 8 Interface? Choose the best option(s) - **`public`** - `private` - **`default`** - **`static`** **Question # 20** Which one of the following is not a severity in SonarQube? Choose the best option: - Major - Critical - Blocker - **Issues**