JAVA Interfaces and Abstract Classes interface Test{ int p = 10; //line 1 public int q = 20; //line 2 public static int r = 30; //line 3 public static final int s = 40; //line 4}Which of the above line will give compilation error? None of these 1 2 4 3 None of these 1 2 4 3 ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes What will be the output when the following program is compiled and executed?abstract class TestAbstract{ String my_name; String myName(){ my_name = "Examveda"; return my_name; } abstract void display();}public class Test extends TestAbstract{ void display(){ String n = myName(); System.out.print("My name is "+ n); } public static void main(String args[]){ Test t = new Test(); t.display(); }} Program will compile and execute successfully and prints Compilation error occurs as the abstract class TestAbstract contains a non-abstract method. Program compiles but leads to runtime exception. None of these Compilation error as class can not be declared as abstract. Program will compile and execute successfully and prints Compilation error occurs as the abstract class TestAbstract contains a non-abstract method. Program compiles but leads to runtime exception. None of these Compilation error as class can not be declared as abstract. ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes Runnable is a _____ . vaiable method interface class abstract class vaiable method interface class abstract class ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes Which two of the following are legal declarations for abstract classes and interfaces?1. final abstract class Test {}2. public static interface Test {}3. final public class Test {}4. protected abstract class Test {}5. protected interface Test {}6. abstract public class Test {} 3 and 6 1 and 2 5 and 6 2 and 4 3 and 5 3 and 6 1 and 2 5 and 6 2 and 4 3 and 5 ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes Determine output of the following code.interface A { }class C { }class D extends C { }class B extends D implements A { }public class Test extends Thread{ public static void main(String[] args){ B b = new B(); if (b instanceof A) System.out.println("b is an instance of A"); if (b instanceof C) System.out.println("b is an instance of C"); }} b is an instance of Nothing. b is an instance of A followed by b is an instance of b is an instance of b is an instance of Nothing. b is an instance of A followed by b is an instance of b is an instance of ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes Which of the following declares an abstract method in an abstract Java class? public void abstract Method(); public abstract void method(); public abstract void method() {} public void method() {} public abstract method(); public void abstract Method(); public abstract void method(); public abstract void method() {} public void method() {} public abstract method(); ANSWER DOWNLOAD EXAMIANS APP
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