Java Questions

Problem Statement: Write a simple swing animation program using Java. Two buttons to start the animation and to close exit the window. You can use javax.swing.* package and java.awt.* package. Solution The problem statement is somewhat vague. It only conveys the idea to develop a swing application with animation using Swing / AWT packages in […]

In this tutorial, we will learn how to write Java methods that return values to the caller method i.e main method.  Below is an example of java code with methods that return double datatypes. Example Java Method with void public void readRadius() { Scanner sc = new Scanner(System.in); System.out.print(“Enter radius =:”); radius=sc.nextFloat(); }  Java method […]

Write a JDBC program to connect MySQL Database? JDBC stands for Java DataBase Connectivity. It is an API for Java to connect to various databases. Before writing the program to connect to MySQL database, we will do some initial setup in the back-end. JDBC API   MySQL Database Setup We will create a sample database […]

Introduction Unresolved compilation problems in the code are due to compilation errors in the code. Many problems can be detected if we use an IDE like IntelliJ, Eclipse IDE, etc. This is a very generic error and there could be multiple reasons to get this error. Error Let’s see a sample error that has a […]

How to set JAVA_HOME on Windows This page will teach us how to set the JAVA_HOME environment variable on the Windows operating system. The JAVA_HOME environment variable is used in many scripts that support Java, servers, and other applications. We can perform this setup during the Java installation process. Java JDK Download https://www.testingdocs.com/download-and-installing-java-jdk/ Identify JDK […]

Program Description Write a Java to print two lines of data. We will use the System.out.println statement. System.out.println System.out.println statement prints the string and then terminates the line. The following println statement would print the data on the next line. Flow chart   Java Program public class JavaDemo { public static void main(String[] args) { […]