No, we cannot declare final interface in java because its implementation is provided by another class and final interface can not be implemented. Example final interface SubtractionTest {   void subtraction(int num1, int num2);   }   public class Main implements SubtractionTest { public void subtraction(int num1, int num2) { System.out.println(num1 – num2); }   … Read more

No, we cannot declare an interface method static in java because interface methods are abstract by default, and static and abstract keywords can’t be used together. Example interface SubtractionTest {   static void subtraction(int num1, int num2);   }   public class Main implements SubtractionTest { void subtraction(int num1, int num2) { System.out.println(num1 – num2); … Read more

No, we cannot override non static method as static method in java. class ShowTest {   void show() { System.out.println("Inside super class method"); }   }   public class Main extends ShowTest { static void show() { System.out.println("Inside sub class method"); } public static void main(String[] args) { Main.show(); } }class ShowTest { void show() … Read more

No, we cannot override the private methods because private methods will not be inherited to sub class. Example class SubtractionTest {   private void subtraction(int num1, int num2) { System.out.println("Inside super class method"); System.out.println(num1 – num2); }   }   public class Main extends SubtractionTest {   public static void main(String[] args) { Main main … Read more

There are numerous contrasts between technique Method overloading and Method overriding in java. A rundown of contrasts between technique method overloading and method overriding are given underneath:   Method Overloading Method Overriding It represents compile time polymorphism. It represents run time polymorphism. Method overloading provides a way to increase the readability of the program. Method … Read more

No, Static methods can’t be overridden because they are associated with class not with the object. class MultiplicationTest {   public static void multiplication(int num1, int num2) { System.out.println(num1 * num2); }   }   public class Main extends MultiplicationTest { public void multiplication(int num1, int num2) { System.out.println(num1 * num2); } public static void … Read more

Yes, we can override a method which is overloaded in super class. Example class MultiplicationTest {   public void multiplication(int num1, int num2) { System.out.println(num1 * num2); }   public void multiplication(int num1, int num2, int num3) { System.out.println(num1 * num2 * num3); } }   public class Main extends MultiplicationTest { public void multiplication(int … Read more

Yes, we can declare overloaded methods as final. class SumTest {   public final void sum(int num1, int num2) { System.out.println(num1 + num2); }   public void sum(int num1, int num2, int num3) { System.out.println(num1 + num2 + num3); } }   public class Main { public static void main(String[] args) { SumTest sumTest = … Read more

Yes, overloaded methods can be synchronized in java. Note: But you will get mutual exclusive problem if all methods are synchronized and you are using same object to invoke them. So, instead of using synchronized keyword at method level, try to follow below approach. class LoggerTest { private final Object LOCK = new Object();   … Read more

Yes, we can declare an overloaded method as static and another one as non-static. Example class SubtractionTest {   public void subtraction(int num1, int num2) { System.out.println(num1 – num2); }   public static void subtraction(int num1, int num2, int num3) { System.out.println(num1 – num2 – num3); }   }   public class Main { public … Read more