Equals method in Java equals() is a method of Object class. Used to compare two objects or two String literals in Java. It returns boolean true or false. When we need to compare two objects we need to Override the equals() method in Java. Let’s take an example where we are going to compare two
toString() method in Java. toString() is a method of Object class. an Object is a superclass of every class in Java. toString() method returns the string representation of the object. Sometimes we need to override toString() method. so the question is that why we need to override the toString() method in Java. Let’s try to
Insert data from the single page into multiple tables is a tricky task. But using JDBC in this tutorial we will solve it in an easy So if you don’t know how to perform JDBC operation in Java please follow the link. Java database connectivity tutorial in a simple way. Let’s create a Java web
Java StringBuffer class is a mutable class in java. It means We can change the string when we are going to use StringBuffer class in Java. StringBuffer is same as String class only the difference is it can be modified. Example: public class Main { public static void main(String args) { StringBuffer sb = new
String class in java and its methods. A string is a class from lang package. Which is public and final class extends Object class and implements Serializable, Comparable<String>, CharSequence interface. String Class in Java is immutable class. It means once you create an object of String class. It will not be modified read more about immutable String. Some
Java string is a class. which is a class of “lang” package. before String class, we need to discuss what is a string in java. so in this tutorial, we are going to focus on everything about java string and java interview questions and answers. What is String In Java, String is a sequence of
If you developing any kind of application using Java. So there are lots of chances to get an exception in your application. To write code exception free and make a standard flow of code java provide a very strong mechanism called Exception handling. So in this tutorial, we are going to focus on what is Exception handling
As we discussed in the previous tutorials what is oops concept like. classes and object, inheritance, polymorphism, encapsulation, abstraction in java. In this tutorial, we will focus on constructor in java but before the start, If you are new to java please have a look at class and object tutorial. What is the constructor in
One the most important oops concept is the polymorphism. polymorphism means the same name or interfaces with multiple forms. So what is the polymorphism in Java, what is the use of polymorphism in java? how to achieve this in Java and at the end we will discuss some interview questions and answers based on polymorphism in java.
In this tutorial, we will discuss on Java encapsulation and at the end, we will focus on interview questions and answers with some practical examples. We trying to present Java concept in the very easy way so if you feel any trouble please comment below. What is encapsulation in Java? Encapsulation is another concept of object-oriented
