Answers for “java runtime (class file version 59.0), this version of the java runtime only recognizes class file versions up to 52.0” has been compiled by a more recent version of the Java Runtime (class file version ), this version of the Java Runtime only recognizes class file versions up to Java version names in error messages: 49 = Java 5 50 = Java 6 51 = Java 7 52 = Java 8 (or 1.8) 53 = Java 9 54 = Java 10 55 = Java 11 56 = Java 12 57 = Java 13 58 = Java 14 Solutions: 1.
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What version of Java is emitted by Javac?
classes with v59 are emitted by javac v15 (or javac v16 and up, if using the -release 15 switch). A java that complains about class files being higher than v52 is java v8, In other words, you’ve compiled code to class files targeted at java 15, and are trying to run these on a java 8, and obviously that square peg does not fit into that round hole. You have 3 available solutions:
Upgrade the java to java15 or up. That’d be the java running in that cloud / workbench thing. Downgrade the java you’re compiling with back down to jdk8. If the class file was e.g. produced on your workmachine, either learn how you configure which java is the default target, or if using an IDE edit the project settings, or if you can’t figure any of this out, just uninstall it all and ensure only a java8 is installed. Not recommended. Configure the build script (and, depending on how you’ve set things up, your IDE configuration) that you want to target java8. If you’re using javac on the command line, this boils down to adding a -release 8 option when compiling. Find the equivalent of that for maven, gradle, eclipse, intellij – whatever you are using.
Any one of these options will fix your problem. The list is exhaustive.
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Why can’t I run compiled code in a newer Java version?
The problem is Windows. – Open your command prompt and type “where java”. When you do this, you will notice a “weird” path that looks something like this C:\Program Files\Common Files\Oracle\Java\javapath\java.exe I can’t recall what Windows version introduced this shortcut, but I want to say it was Windows 7.
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Why does Java complain about class files being higher than V52?
classes with v59 are emitted by javac v15 (or javac v16 and up, if using the -release 15 switch). A java that complains about class files being higher than v52 is java v8, In other words, you’ve compiled code to class files targeted at java 15, and are trying to run these on a java 8, and obviously that square peg does not fit into that round hole. You have 3 available solutions:
Upgrade the java to java15 or up. That’d be the java running in that cloud / workbench thing. Downgrade the java you’re compiling with back down to jdk8. If the class file was e.g. produced on your workmachine, either learn how you configure which java is the default target, or if using an IDE edit the project settings, or if you can’t figure any of this out, just uninstall it all and ensure only a java8 is installed. Not recommended. Configure the build script (and, depending on how you’ve set things up, your IDE configuration) that you want to target java8. If you’re using javac on the command line, this boils down to adding a -release 8 option when compiling. Find the equivalent of that for maven, gradle, eclipse, intellij – whatever you are using.
Any one of these options will fix your problem. The list is exhaustive.
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Is Tomcat running on Java 8?
The simplest answer is that Tomcat is running on Java 8. yes you’re right tomcat was still using java1.8. I changed my JAVA _HOME to the new version Thank you The problem is not tomcat but the JVM which runs tomcat. I don’t know how you start tomcat, but you should start it with a JDK 11. If you use eclipse you should check the Server Runtime.
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