Java Programming

KodingWindow

Java Programming

How to install Java on Ubuntu

kodingwindow@kw:~$ sudo apt -y install openjdk-21-jre openjdk-21-jdk
...
root@kw:/home/kodingwindow# java --version
openjdk 21.0.5 2024-10-15
OpenJDK Runtime Environment (build 21.0.5+11-Ubuntu-1ubuntu124.04)
OpenJDK 64-Bit Server VM (build 21.0.5+11-Ubuntu-1ubuntu124.04, mixed mode, sharing)

Java Fundamentals

Java Hello World program Java Hello World program without using a semicolon Java program to perform the arithmetic operations Java program to perform the boolean operations Show More »

Java Control Statements

Java program to check the equality of given numbers Java program to check the given number is positive or negative Java program to check the given number is even or odd

Java Loops

Java program to print the even and odd numbers Java program to print the numbers using for loop Java program to print the star pyramid patterns Java program to find the factorial of a given number

Java Strings

Java program to concatenate the given strings Java implementation of the indexOf method Java implementation of the Character class Java implementation of the charAt method Show More »

Java Arrays

Java program to print the sum of all numbers in a given array Java program to find the min and max number from a given array Java program to print the length of all strings from a given array Java program to print the transpose of a given matrix

Java Classes

Java program to demonstrate the use of Math class methods Java program to demonstrate the use of constructor Java implementation of final and static keywords Java implementation of Scanner close method Show More »

Java Methods

Java program to get the Operating System details How to get the size of heap in Java Java program to format the text blocks strings using formatted() method

Java Inheritance

Java program for Single Inheritance Java program for Multilevel Inheritance Java program for Hierarchical Inheritance Java program for Hybrid Inheritance (Multilevel and Hierarchical)

Java Polymorphism

Implementation of Java method overloading How to overload the main() method in Java Implementation of Java method overriding

Java Abstraction

Java program for Abstract class Java program for Interface How to achieve multiple inheritance in Java using interfaces How to achieve multiple inheritance in Java using interfaces and default methods

Java Collections

Implementation of Java ArrayList class Implementation of Java LinkedList class Implementation of Java HashSet class Implementation of Java LinkedHashSet class Show More »

Java Exception Handling

Java program to demonstrate the use of try and catch blocks Java program to demonstrate the use of finally block Java program to demonstrate the use of nested try, catch, and finally blocks Java program to handle the ArithmeticException Show More »

Java Regular Expressions

Implementation of Java Regular Expressions Java program to accept a valid blood group using regex

Java Multithreading

Java program to extends the Thread class Java program for Runnable interface Java program for getName(), getId() and getPriority() methods Java program for join() and sleep() methods Show More »

Java AWT and Swing Graphics

Java program to draw a Line using Graphics2D class Java program to draw a Curve using Graphics2D class Java program to draw a Circle using Graphics2D class Java program to draw a Rectangle using Graphics2D class Show More »

Java Database Connectivity (JDBC)

Java MySQL to connect, create database, and table Java MySQL to insert and retrieve the records from a table Java MySQL to update the table records Java MySQL to perform JDBC CRUD operations Show More »

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