Top "Unsupported-class-version" questions

An UnsupportedClassVersionError is thrown when the Java Virtual Machine attempts to read a class file and determines that the major and minor version numbers in the file are not supported.

How to fix java.lang.UnsupportedClassVersionError: Unsupported major.minor version

I am trying to use Notepad++ as my all-in-one tool edit, run, compile, etc. I have JRE installed, and I …

java jvm incompatibility unsupported-class-version
Unsupported major.minor version 52.0

Pictures: Command Prompt showing versions Picture of error Hello.java import java.applet.Applet; import java.awt.*; public class Hello …

java applet version unsupported-class-version
org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].StandardHost[localhost].StandardContext[/CollegeWebsite]]

org.apache.catalina.core.ContainerBase addChildInternal SEVERE: ContainerBase.addChild: start: org.apache.catalina.LifecycleException: Failed to start component [StandardEngine[Catalina].…

java jsp tomcat servlets unsupported-class-version
java.lang.UnsupportedClassVersionError Unsupported major.minor version 51.0

I am trying to build an application, but it gives some error. My JDK version is given below: java version "1.6.0_30" …

java jdk1.6 unsupported-class-version
Exception in thread "main" java.lang.UnsupportedClassVersionError: a (Unsupported major.minor version 51.0)

Possible Duplicate: unsupported major .minor version 51.0 I installed JDK7, a simple hello word program gets compile but when I run …

java exception java-7 unsupported-class-version
java.lang.UnsupportedClassVersionError

When I ran a java program I received this error.. Could you please suggest why do we get this error: …

java unsupported-class-version
Java 6 Unsupported major.minor version 51.0

I recently uninstalled Java 8, to use Java 6 as I want my code/creations to be usable by more people than …

java maven unsupported-class-version
Maven Installation OSX Error Unsupported major.minor version 51.0

I installed maven by following this steps:(a tutorial) JAVA_HOME=/Library/Java/Home export M2_HOME=/Users/steven/zimmermann/…

java macos maven installation unsupported-class-version
ERROR Source option 1.5 is no longer supported. Use 1.6 or later

It all happens when I was trying to build a springboot application by ./mvnw clean install When I first run …

spring-boot maven intellij-idea jetbrains-ide unsupported-class-version
Unsupported major.minor version 51.0 but everything is set to JDK 1.6

I have a Maven Eclipse application which I'm trying to run through the command prompt using the following command: java …

java unsupported-class-version