Java ConnectException: Causes, Troubleshooting, and Solutions

ConnectException is a Java exception that occurs when a client application is unable to connect to a server application. This exception is thrown when there is a failure in establishing a connection to the server or when the server is not available. The ConnectException is a subclass of the IOException class and is usually caused by network-related issues such as network connectivity problems, incorrect network settings, or server downtime. It can be resolved by checking the network connection, verifying the server availability, and ensuring that the correct network settings are used.