Java – unsupported major Minor version 49.0
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Java
When I log in to my application, I get the following exception
What does that mean? How can I solve the problem?
Solution
You can use to run Class is used for compilation The Java version of class does not match The JVM running it is an earlier version of the JVM used to compile the class
As detailed here, you have a version 1.5 class that you try to run on an earlier JVM
Edit: was 5.1 uses JDK 1.4, it would appear
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