JAVA Interfaces and Abstract Classes Which of the following is a correct interface? interface A { void print(); } interface A { void print() { } } abstract interface A { print(); } abstract interface A { abstract void print(); { }} interface A { void print(); } interface A { void print() { } } abstract interface A { print(); } abstract interface A { abstract void print(); { }} 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(); }} None of these Compilation error occurs as the abstract class TestAbstract contains a non-abstract method. Program will compile and execute successfully and prints Compilation error as class can not be declared as abstract. Program compiles but leads to runtime exception. None of these Compilation error occurs as the abstract class TestAbstract contains a non-abstract method. Program will compile and execute successfully and prints Compilation error as class can not be declared as abstract. Program compiles but leads to runtime exception. ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes Which of the following statements regarding abstract classes are true? An abstract class can be extended. A subclass of a non-abstract superclass can be abstract. An abstract class can be used as a data type. All of these A subclass can override a concrete method in a superclass to declare it abstract. An abstract class can be extended. A subclass of a non-abstract superclass can be abstract. An abstract class can be used as a data type. All of these A subclass can override a concrete method in a superclass to declare it abstract. 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();}} will print Class One method compiles fine but print nothing None of these will print Class Two method Compilation Error will print Class One method compiles fine but print nothing None of these will print Class Two method Compilation Error ANSWER DOWNLOAD EXAMIANS APP
JAVA Interfaces and Abstract Classes Runnable is a _____ . vaiable interface abstract class class method vaiable interface abstract class class method 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 method(); public abstract void method(); public void abstract Method(); public void method() {} public abstract void method() {} public abstract method(); public abstract void method(); public void abstract Method(); public void method() {} ANSWER DOWNLOAD EXAMIANS APP
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