how do I use different version of java

问题

I've installed both java 6 and 7 and using eclipse to write a simple jdbc application. I have both sqljdbc4.jar and sqljdbc.jar in the lib folder. I'm getting this message...

Dec 18, 2013 9:29:51 AM com.microsoft.sqlserver.jdbc.SQLServerConnection

SEVERE: Java Runtime Environment (JRE) version 1.7 is not supported by this driver. Use the sqljdbc4.jar class library, which provides support for JDBC 4.0.

Exception in thread "main" java.lang.UnsupportedOperationException: Java Runtime Environment (JRE) version 1.7 is not supported by this driver. Use the sqljdbc4.jar class library, which provides support for JDBC 4.0.

at com.microsoft.sqlserver.jdbc.SQLServerConnection.<init>(SQLServerConnection.java:304)

at com.microsoft.sqlserver.jdbc.SQLServerDriver.connect(SQLServerDriver.java:1011)

at java.sql.DriverManager.getConnection(Unknown Source)

at java.sql.DriverManager.getConnection(Unknown Source)

at sqldriver.doConnection(sqldriver.java:27)

at sqldriver.main(sqldriver.java:12)

If I'm suppose to be using 1.6 how would I go about doing that?

回答1:

You need to remove sqljdbc.jar from the class and build path and only use sqljdbc4.jar (which is for Java 6 and higher).

回答2:

Right click on your project --> properties and then Java compiler and then select the java version you need

回答3:

Try this example. It's easier and you don't need to add the sqljdbc jars.

回答4:

I got it.
I needed to change the Run/Debug Settings > Edit > Execution environment

And there I go.
It's not a permanent fix but it will do for now.

回答5:

I had a similar issue when I tried to import data from SQL Server into my Solr index (solr v1.4.0 on a Windows Server 2012 R2 machine). To fix the issue I deleted sqljdbc.jar from the solr lib directory and added sqljdbc4.jar to the same directory.

来源：https://stackoverflow.com/questions/20662692/how-do-i-use-different-version-of-java