Let’s learn multiple inheritance in java. Multiple inheritance in java Multiple inheritance is one of the object oriented feature where a class or a sub class can inherit features from more than one parent class or super class. But here problem occurs when methods with same signature exist in both parent class and child class.…
Read More Multiple inheritance in javaLet’s learn comparable interface in java. Comparable interface in java Comparable interface is an interface used to compare objects of same type. It can be implemented by any custom class and is found in java.lang package. Declaration: public interface Comparable<T> Parameters: <T> the type of objects that this object may be compared to Comparable interface…
Read More Comparable interface in javaLet’s learn functional interface in java. Functional interface in java Functional interface is one kind of an interface which has only one abstract method. Syntax: @FunctionalInterface interface interfacename { // one abstract method } NOTE: @FunctionalInterface is an annotation. This annotation is optional. Before Java 8 an interface had abstract method signature but didn’t define…
Read More Functional interface in javaLet’s learn instanceof java. instanceof java instanceof operator is used to check whether the object is an instance of specified type. Type can be a class or a subclass or an interface. instanceof operator returns either true or false. It is also known as comparison operator. Let’s see instanceof java example. public class Example {…
Read More instanceof javaLet’s learn immutable class in java. immutable class in java An immutable object in one that once the object is created its state or content cannot be modified. For example: string is immutable in java. Click here to know why. Also all wrapper classes namely Boolean, Byte, Short, Integer, Long, Float, Double etc are immutable.…
Read More immutable class in javaLet’s learn wrapper class in java. wrapper class in java wrapper classes allow primitive data types a way to convert into object and vice-versa. For example: int a = 7; // using primitive datatype Integer a = new Integer(7); // using wrapper class Since Java 1.0 wrapper class is been there and from Java version…
Read More wrapper class in javaLet’s learn random class in java. random class java An instance of Random class is used to generate a stream of pseudorandom numbers. Instances of java.util.Random are not cryptographically secure. Instances of java.util.Random are threadsafe. However, the concurrent use of the same java.util.Random instance across threads may encounter contention and consequent poor performance. random class…
Read More random class javaLet’s learn to write a java program to add two binary numbers. write a java program to add two binary numbers Binary number is a number expressed or represented in 0 and 1. Hence binary numbers consists of 0’s and 1’s. In the below java program to add two binary numbers user enters two binary…
Read More write a java program to add two binary numbersLet’s learn difference between abstract class and interface in java. Difference between abstract class and interface in java Here’s the difference between abstract class and interface. abstract class interface an abstract class can have protected, private etc. as access modifiers for class members. members of interface are public by default. abstract class can have static,…
Read More Difference between abstract class and interface in javaLet’s learn difference between class and interface in java. difference between class and interface in java Here’s the difference between class and interface. class interface “class” keyword is used to declare class. whereas “interface” keyword is used to declare an interface. multiple inheritance is not supported in a class whereas interface supports multiple inheritance. A…
Read More difference between class and interface in java