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Connection error with JDBC

 
Ranch Hand
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Hi ,

i am running a JDBC program in Eclipse




But when i run this program i am getting this error




How to remove this
 
Saloon Keeper
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Try commenting this line out
 
srikant nair
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When i commented
Class.forname




This is the error


java.sql.SQLNonTransientConnectionException: CLIENT_PLUGIN_AUTH is required
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:108)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:95)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:87)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:61)
at com.mysql.cj.jdbc.exceptions.SQLError.createSQLException(SQLError.java:71)
at com.mysql.cj.jdbc.exceptions.SQLExceptionsMapping.translateException(SQLExceptionsMapping.java:79)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:862)
at com.mysql.cj.jdbc.ConnectionImpl.<init>(ConnectionImpl.java:444)
at com.mysql.cj.jdbc.ConnectionImpl.getInstance(ConnectionImpl.java:230)
at com.mysql.cj.jdbc.NonRegisteringDriver.connect(NonRegisteringDriver.java:226)
at java.sql.DriverManager.getConnection(Unknown Source)
at java.sql.DriverManager.getConnection(Unknown Source)
at jdbcconnection.main(jdbcconnection.java:12)
Caused by: com.mysql.cj.exceptions.UnableToConnectException: CLIENT_PLUGIN_AUTH is required
at sun.reflect.NativeConstructorAccessorImpl.newInstance0(Native Method)
at sun.reflect.NativeConstructorAccessorImpl.newInstance(Unknown Source)
at sun.reflect.DelegatingConstructorAccessorImpl.newInstance(Unknown Source)
at java.lang.reflect.Constructor.newInstance(Unknown Source)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:59)
at com.mysql.cj.exceptions.ExceptionFactory.createException(ExceptionFactory.java:83)
at com.mysql.cj.protocol.a.NativeAuthenticationProvider.connect(NativeAuthenticationProvider.java:220)
at com.mysql.cj.protocol.a.NativeProtocol.connect(NativeProtocol.java:1411)
at com.mysql.cj.NativeSession.connect(NativeSession.java:165)
at com.mysql.cj.jdbc.ConnectionImpl.connectOneTryOnly(ConnectionImpl.java:982)
at com.mysql.cj.jdbc.ConnectionImpl.createNewIO(ConnectionImpl.java:852)
... 6 more
 
Marshal
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What are the version numbers of the MySQL database and the mysql-connector jar file?
 
srikant nair
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My SQL database is 5.5

Connector jar file is 8.0.11
 
Carey Brown
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When you post code or any other text that needs indenting or a fixed width font (e.g. stack traces) then please use "Code" tags. To apply Code tags,  first highlight the text you want to tag, then click the button marked "Code" above the edit window. After doing that, verified that you've done this correctly by clicking the "Preview" button just below the edit window. I fixed it  for you this time.
 
Ron McLeod
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Your issue might be that there is a problem with the connector trying to establish a encrypted connection to the database.  As a test, try specifying useSSL=false.
 
srikant nair
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No,

Still the same error
Is it because of wrong username or password ?
 
Carey Brown
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Googling the error, some postings indicate a problem with older versions of MySQL. Can you upgrade?
 
Rancher
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I think those posts are referring to using something like a new Connector/J with a really old MySQL.
So, in this case, using Connector/J 8 with pre-MySQL 5.5.

From the page for Connector 8.0.11:


It is suitable for use with MySQL Server versions 8.0, 5.7, 5.6, and 5.5.



So it should be fine, assuming everything is as the OP says.
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