If you cannot upgrade to higher Java version e. If upgrading to Java 8 is not an option then make sure you use Java compiler's cross compilation feature and compile source code for lower Java version by using -target option of javac command. I wasn't able to run the rm command, but updated the line in the start. UtilityUtil I have researched and found out that it happens if the version of java is different from runtime and compilation time. UnsupportedClassVersionError: Helloworld : Unsupported major. Once you got that, just run your program again. You can also get unsupported major.
On the other hand, if you're consuming the codec library as is from Maven Central for example, or other binary repository then the only thing you can do is upgrade your runtime to Java8 as you can't change the compiled binary. Java 7 or Java 6. But I don't really know how that works so. Simplest way to fix this error is install the latest Java release i. Once you know the root cause it becomes easy to solve the problem, it's always a mismatch between Java version at compile and run-time.
Further Learning Related debugging tutorials If you like this tutorial and wants to learn more about troubleshooting errors and exception in Java, just check some of my earlier tutorials and debugging guide. So, make them into common version. Once you done that you should be able to run the Applet compiled in any Java version without any issue, remember Java is backward compatible. Menu on the left was very helpful as it was topic based. Choose your Java Application from left side list of Java application which has run configuration Once you make this change, you can just run your Java application and it should run fine, without any sign of java. It should work fine this time. Java 8 and run your program.
You would also be fine if you are running on Java 8, but don't run the program on Java 6 or lower version. Horstmann for more detail on Java compiler. If recompilation is an option then make sure you add -target option to javac with corresponding Java version you are looking as target runtime. Let's understand the cause and solution of Unsupported major. How to fix Unsupported major. Since they internally use javac compiler to compile the file, you need to customize corresponding task e.
In order to adapt this solution, you need to re-compile your project. Now I've been looking into upgrading my 1. Click on Run Menu and then choose Run Configurations as shown below 2. For example, if you are generating class file to run on Java 6, you can pass the following argument to command : javac -target 1. In short, you are getting this error because it is compiled with Java 8, source version 52 corresponds to Java 1. Anyway, even if you are not using features which is not supported in lower version, every class file has a major or minor version, which is populated by Java compiler, which is closely related to Java version. In Eclipse If you are compiling your Java program in Eclipse and running it from command line, then you have the option to compile Java files for target environment.
I have followed these two posts and tried to figure out that i am using java 8 and runtime has 1. Hi, I compiled my program in 1. Java 8, but it doesn't mean that you can run a class compiled using Java 7 into Java 5, Why? I was having the same problem and found this thread - I had no idea where to start - Thanks, uknighted. Please restore that if possible. I have used echo to print the java version while building. . But still the same problem exists.
If you want to compile a class file for Java 5, just use -target 1. I downloaded it straight from Mojang by clicking the 'Download Server' button in the 1. Check the Apache codec dependency with. Think about, can you run or in Java 5, no right. For example, if your build environment is using Java 7 and your production environment is using Java 1. When you compile a Java source file, it creates a and add the class file version into it.
This is also necessary if you are. That's all about how to solve Unsupported major. Select project, right click, select properties 2. This means you have two solution, first upgrade to Java 8 or compiler your program for lower version even if you are using Java 8 compiler by using -target option of javac command. In Applet If you are trying to run an Applet from a website internal or external then you don't have any control on build or compile step. I am not really sure how to change that to 1. First of all many thanks for creating such a great site for learning java and passing interviews.
Thanks a lot Javin, i was not able to understand the root cause of this problem in my eclipse. If it tells you it uses 52 Java8 most likely based on the exception then you either run your code with 1. That will solve your issue. . . .
. . . . . .