Solve the unsupported Major.minor version 51.0 problem in Java _java

Unsupported Major.minor version 51.0 solution

Today, occasionally, colleagues encounter a problem and deepen their understanding of the build path and Java compiler compliance level in eclipse.

Resolve Unsupported Major.minor version 51.0 error

Recently, a new installation used Jdk7, and some classes were compiled to replace the original, unsupported Major.minor version 51.0 error. Online search found the cause of the problem: the Jdk7 compiled class file on the Jdk6 run in Tomcat, will report this error.

It's also easy to solve: open properties on items in Exclipse-java compiler– Select a suitable version and recompile.

Specific steps

Resolution: Project------> right------> Attributes------>java Compiler------>compiler Compliance level------> Select the JDK version you are using------> applications.

Summary: Different JDK versions use different major.minor, which can cause this error. In the project to use the current Computer Configuration JDK version, avoid confusedly.

Knowledge Expansion: Major.minor version, which is equivalent to the primary and secondary versions of a software, but here is the main version and minor version number of a Java class that is identified.

The above is the Java unsupported Major.minor version 51.0 solution of the data collation, follow-up to supplement the relevant knowledge, thank you for your support for this site!