JAVA Interfaces and Abstract Classes Runnable is a _____ . vaiable method class interface abstract class vaiable method class interface 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 {} 5 and 6 1 and 2 3 and 6 3 and 5 2 and 4 5 and 6 1 and 2 3 and 6 3 and 5 2 and 4 ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes Suppose A is an abstract class, B is a concrete subclass of A, and both A and B have a default constructor. Which of the following is correct?1. A a = new A();2. A a = new B();3. B b = new A();4. B b = new B(); 1 and 2 1 and 3 2 and 3 3 and 4 2 and 4 1 and 2 1 and 3 2 and 3 3 and 4 2 and 4 ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes Which of the following declares an abstract method in an abstract Java class? 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(); public void abstract Method(); ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes What will happen after compiling this program code?abstract class MyClass{ //line 1 private int a, b; public void call(int a, int b){ this.a = a; this.b = b; System.out.print(a+b); }}public class Test{ public static void main(String args[]){ MyClass m = new MyClass(); //line 2 m.call(12,25); }} None of these Compilation error due to line 2 Runtime error Compilation error due to line 1 Successful run and print 37 None of these Compilation error due to line 2 Runtime error Compilation error due to line 1 Successful run and print 37 ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes What will be the output?interface A{public void method();}class One{public void method(){System.out.println("Class One method");}}class Two extends One implements A{public void method(){System.out.println("Class Two method");}}public class Test extends Two{public static void main(String[] args){A a = new Two();a.method();}} None of these Compilation Error will print Class Two method will print Class One method compiles fine but print nothing None of these Compilation Error will print Class Two method will print Class One method compiles fine but print nothing ANSWER DOWNLOAD EXAMIANS APP
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