ClassNotFoundException com mysql jdbc Driver

Question

This question might have asked here number of times   After doing some google search for the above error and doing some update  I can t understand why I m still getting that error  I ve already put my driver-- mysql-connector-java-5 1 5-bin in the classpath   Java Home jre lib  Java Home jre lib ext  Java Home lib   and the code which I m using to connect to mysql database is   try  Class forName  com mysql jdbc Driver     Connection con DriverManager getConnection  jdbc mysql   localhost 3306 mail   root        Statement stmt   con createStatement    ResultSet rs   stmt executeQuery  select message body from deadletter    String dbtime  while  rs next      dbtime   rs getString 1   System out println dbtime       con close       catch  SQLException e            System out println  Connection Failed  Check output console            e printStackTrace                       and the complete stacktrace of the above exception is   java lang ClassNotFoundException  com mysql jdbc Driver     at java net URLClassLoader 1 run URLClassLoader java 200      at java security AccessController doPrivileged Native Method      at java net URLClassLoader findClass URLClassLoader java 307      at java lang ClassLoader loadClass ClassLoader java 307      at sun misc Launcher AppClassLoader loadClass Launcher java 301      at java lang ClassLoader loadClass ClassLoader java 252      at java lang ClassLoader loadClassInternal ClassLoader java 320      at java lang Class forName0 Native Method        at java lang Class forName Class java 169      at mail main mail java 114      Now  what s wrong I m doing here

User · Answer

just copy and paste the mysqlconnector jar to your project folder and then build path it will definitely work

User · Answer

I too struggled with the same problem and finally got the solution for it  Just copy the MySql-Connector jar into Tomcat s lib folder  and then remove the jar from the webapp s lib folder  and then  run the project

User · Answer

see to it that the argument of Class  forName method is exactly  com  mysql  jdbc  Driver   If yes then see to it that mysql connector is present in lib folder of the project  if yes then see to it that the same mysql connector   jar file is in the ClassPath variable  system variable

User · Answer

If you are using NetBeans follow the following steps    Right click on  Libraries  and select  Add Library    Scroll down the list of  Global Libraries  and select  MySQL JDBC Driver  and click on  Add Library

User · Answer

You should download MariaDB connector  Then    Expand your project  Right-click on Libraries  Select Add Jar Folder  Add mariadb-java-client-2 0 2 jar which you just downloaded

User · Answer

I experienced the same error after upgrading my java to 1 8 0 101  Try this  i  Remove the mysql jar fro your buildpath  ii  Clean the server and project iii  Add the jar file back to the build path   Worked for me

User · Answer

this ans is for eclipse user        first u check the jdbc jar file is add in Ear libraries      if yes   then check   in web Content- web Inf folder- lib   and past here jdbc jar file in lib folder

User · Answer

If you re facing this problem with Eclipse  I ve been following many different solutions but the one that worked for me is this    Right click your project folder and open up Properties  From the right panel  select Java Build Path then go to Libraries tab  Select Add External JARs to import the mysql driver  From the right panel  select Deployment Assembly  Select Add     then select Java Build Path Entries and click Next  You should see the sql driver on the list  Select it and click first    And that s it  Try to run it again  Cheers

User · Answer

In NetBeans    right click on libraries  select properties select rub tab there you need to add the mysql-connector-java jar and apply

User · Answer

1  Download connector from here https   www mysql com products connector    2  Select JDBC driver for mysql  3  click on Platform Independent  Architecture Independent   ZIP Archive   4  Download the file and unzip it  5   For Eclipse Click Project- properties-  Java Build Path- Libraries  For Netbeans  right click libraries on left bar-  add jar  6  Click on add external jar   7  select mysql-connector-java-5 1 40-bin jar   8  Done

User · Answer

The most common cause is that you have some conflict in where your classes are loaded from  For example if you have 2 locations and one has JDBC drivers and the other one not then if your classloader loads from the 1st location and some class from the 1st location wants to use the driver - the driver is not there  So look for the duplicate JARs that are using your driver

User · Answer

Most of the possible solution has been covered above  From my experience of this issue  i have placed the mysql-connector-jar in the  WEB-INF lib folder of the webapp module and it worked fine for me

User · Answer

In IntelliJ  Do as they say in eclipse   If you re facing this problem with Eclipse  I ve been following many different solutions but the one that worked for me is this   Right click your project folder and open up Properties   From the right panel  select Java Build Path then go to Libraries tab   Select Add External JARs to import the mysql driver   From the right panel  select Deployment Assembly   Select Add     then select Java Build Path Entries and click Next   You should see the sql driver on the list  Select it and click first   And that s it  Try to run it again  Cheers    Here we have to add the jar file in Project Structure -  Libraries -    add

User · Answer

In netbean Right click on your project  then you click on Libraries   then Run tab  add  library  then select mysql connector

User · Answer

What did you put exactly in lib  jre lib or jre lib ext  Was it the jar mysql-connector-java-5 1 5-bin jar or something else  like a directory    By the way  I wouldn t put it in lib  jre lib or jre lib ext  there are other ways to add a jar to the classpath  You can do that by adding it explicitly the CLASSPATH environment variable  Or you can use the -cp option of java  But this is another story

User · Answer

Ok  May be i  can also contribute my solution   Right click on project -properties -- Deployment assembly   there you need to add the mysql-connector-java jar and apply it   which makes your prject configured with web-Libraries that has this sql connector   This worked for me   I hope this works for you guys as well

User · Answer

I have the same problem but I found this after a long search  http   www herongyang com JDBC MySQL-JDBC-Driver-Load-Class html  But I made some change  I put the driver in the same folder as my ConTest java file   and compile it  resulting in ConTest class   So in this folder have  ConTest class mysql-connector-java-5 1 14-bin jar   and I write this  java -cp   mysql-connector-java-5 1 14-bin jar ConTest   This way if you not use any IDE just cmd in windows or shell in linux

User · Answer

Just copy the MySQL JDBC drive jar file and paste it to Tomcat or whatever is the server s lib folder  It works for me

User · Answer

Ok  i find solution changing the path of mysql-conector-java jar to the follow path   ProjectName WebContent Web-inf lib mysql-conector-java jar    So you need to add the conector to project again and delete the previous one

User · Answer

The only thing that worked for me was downloading the mysql-connector-java-5 0 8-bin jar directly from the MySQL website   http   dev mysql com downloads connector j 3 1 html  Then if you re using Eclipse paste this mysql-connector-java-5 0 8-bin jar  in the WEB-INF lib folder  If doesn t works try with any of the solutions posted in this link  http   javarevisited blogspot com 2012 03 jdbc-javalangclassnotfoundexception html

User · Answer

I keep the mysql-connector jar with my project rather than in Javahome  As a result  you can be sure it can be found by being sure its in the local classpath  A big upside is that you you can more the project to another machine and not have to worry about  or forget  to set this up again  I personally like including it in version control

[java] ClassNotFoundException com.mysql.jdbc.Driver

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