How to find listening Ports on Windows NETSTAT command is used to display network protocol statistics and the TCP/IP network connections. The command has various command-line switches. -a option displays the listening ports on the Windows machine. NETSTAT command The most useful command-line flags are the -a and -b -a displays the listening ports -b […]
Fix SEVERE Failed to initialize Component Connector. In this tutorial, we will learn how to fix the SEVERE Failed to Initialize Component Connector HTTP/1.1-8080 error during the Apache Tomcat server. This error indicates that the server failed to start on the port 8080. Error SEVERE [main] org.apache.catalina.util.LifecycleBase.handleSubClassException Failed to initialize component [Connector[HTTP/1.1-8080]] org.apache.catalina.LifecycleException: Protocol handler […]
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) { […]
Introduction Write a simple Java program to output machine IP address and hostname to the console. InetAddress class is used. import java.net.InetAddress and wrap the code in a try-catch block. The InetAddress java class provides methods to resolve hostnames to their IP addresses and vice versa. Below is a sample Java program to print hostname […]