How do you fix a class not found exception?

How to Resolve ClassNotFoundException in Java

  1. Find out which JAR file contains the problematic Java class.
  2. Check whether this JAR is present in the application classpath.
  3. If that JAR is already present in the classpath, make sure the classpath is not overridden (e.g. by a start-up script).

What is the exception when JDBC driver class is missing?

Driver exception occurs if the MySQL JDBC driver class can not found in the java class path. The Class. forName() fails to loads the mysql driver class that is not available in the class path. If the MySQL JDBC driver jar is not available, or if the jar is missing in the java class path, the exception java.

How do I fix java Lang ClassNotFoundException com mysql JDBC driver?

Fixing java. lang. ClassNotFoundException: com. mysql. jdbc. Driver in Java and Eclipse

  1. Right click on your project.
  2. Choose Build Path and choose configure build path option.
  3. Choose Add External JARs option.
  4. Find and add mysql-connector-java-5.1. 25-bin. jar into Eclipse’s classpath.

What causes class not found exception in java?

ClassNotFoundException is thrown when the Java Virtual Machine (JVM) tries to load a particular class and the specified class cannot be found in the classpath. The Java ClassNotFoundException is a checked exception and thus, must be declared in a method or constructor’s throws clause.

What is a class not found exception?

2. ClassNotFoundException. ClassNotFoundException is a checked exception which occurs when an application tries to load a class through its fully-qualified name and can not find its definition on the classpath.

How do I fix no suitable driver for JDBC?

In brief, we can say that such an error occurs when no JDBC JAR file is added to the classpath of Java. Just we need to add the JAR file to the classpath and then execute the code. The code will hopefully get executed with success.

What is Java Lang ArrayIndexOutOfBoundsException?

java.lang.ArrayIndexOutOfBoundsException. Thrown to indicate that an array has been accessed with an illegal index. The index is either negative or greater than or equal to the size of the array.