Which of the following options is the best for generating random integer 0 or 1? (int)(Math.random() + 0.2) (int)Math.random() + 1 (int)Math.random() (int)(Math.random() + 0.5) TRUE ANSWER : ? YOUR ANSWER : ?
Determine output of the following program.public class Test{ public static void main(String args[]){ System.out.println( Math.floor( Math.random( ) ) ) ; }} 0.5 10.0 0.0 1.0 TRUE ANSWER : ? YOUR ANSWER : ?
The finalize() method is called just prior to An object or variable goes out of scope. A variable goes out of scope. Before garbage collection. None of these An object, variable or method goes out of scope. TRUE ANSWER : ? YOUR ANSWER : ?
Which of the following statements regarding static methods are correct?1. Static methods are difficult to maintain, because you can not change their implementation.2. Static methods can be called using an object reference to an object of the class in which this method is defined.3. Static methods are always public, because they are defined at class-level.4. Static methods do not have direct access to non-static methods which are defined inside the same class. 1 and 3 3 and 4 1 and 2 2 and 4 TRUE ANSWER : ? YOUR ANSWER : ?
What is the output for the below code ?1. public class A{2. int add(int i, int j){3. return i+j;4. }5. }6. public class B extends A{7. public static void main(String argv[]){8. short s = 9;9. System.out.println(add(s,6));10. }11.} None of these Compile fail due to error on line no 9 Compile fail due to error on line no 8 Compile fail due to error on line no 2 15 TRUE ANSWER : ? YOUR ANSWER : ?
class MyClass{ MyClass(){ System.out.print("one"); } public void myMethod(){ this(); System.out.print("two"); }} public class TestClass{ public static void main(String args[]){ MyClass obj = new MyClass(); obj.myMethod(); }} one one two one Exception None of these Compilation Error two one one TRUE ANSWER : ? YOUR ANSWER : ?
What is the output for the below code?public class Test{ public static void printValue(int i, int j, int k){ System.out.println("int"); } public static void printValue(byte...b){ System.out.println("long"); } public static void main(String... args){ byte b = 9; printValue(b,b,b); }} int Compilation fails long Compilation clean but throws RuntimeException None of these TRUE ANSWER : ? YOUR ANSWER : ?
In which area of memory, the system stores parameters and local variables whenever a method is invoked? Storage Area Array Heap Stack TRUE ANSWER : ? YOUR ANSWER : ?
Which of the modifier can't be used for constructors? static public protected private TRUE ANSWER : ? YOUR ANSWER : ?
The main method should be static for the reason It can be accessed by every method or variable without any hindrance. It can be executed without creating any instance of the class. It can be accessed easily by the class loader. None of these TRUE ANSWER : ? YOUR ANSWER : ?