java.lang.UnsupportedClassVersionError: com/sun/javafx/tools/packager/Main : Unsupported major.minor version 52.0

JDK Bug System | Webbug Group | 3 years ago
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    [#JDK-8048697] javafxpackager: Unsupported major.minor version 52.0 - Java Bug System

    java.net | 2 years ago
    java.lang.UnsupportedClassVersionError: com/sun/javafx/tools/packager/Main : Unsupported major.minor version 52.0
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    FULL PRODUCT VERSION : java version "1.8.0_05" Java(TM) SE Runtime Environment (build 1.8.0_05-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode) ADDITIONAL OS VERSION INFORMATION : Microsoft Windows [Version 6.1.7601] A DESCRIPTION OF THE PROBLEM : javafxpackager.exe is not executable. Following Exception is thrown; > javafxpackager.exe Exception in thread "main" java.lang.UnsupportedClassVersionError: com/sun/javafx/tools/packager/Main : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) Could not find the main class: com.sun.javafx.tools.packager.Main. Program will exit. REGRESSION. Last worked in version 7u40 STEPS TO FOLLOW TO REPRODUCE THE PROBLEM : Execute "javafxpackager.exe" in a Windows command prompt. EXPECTED VERSUS ACTUAL BEHAVIOR : EXPECTED - We expect an executable and runnable javafxpackager tool which prints the usage help message. ACTUAL - Exception as described above. ERROR MESSAGES/STACK TRACES THAT OCCUR : Exception in thread "main" java.lang.UnsupportedClassVersionError: com/sun/javafx/tools/packager/Main : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) Could not find the main class: com.sun.javafx.tools.packager.Main. Program will exit. REPRODUCIBILITY : This bug can be reproduced always.

    JDK Bug System | 3 years ago | Webbug Group
    java.lang.UnsupportedClassVersionError: com/sun/javafx/tools/packager/Main : Unsupported major.minor version 52.0
  6. 0

    FULL PRODUCT VERSION : java version "1.8.0_05" Java(TM) SE Runtime Environment (build 1.8.0_05-b13) Java HotSpot(TM) 64-Bit Server VM (build 25.5-b02, mixed mode) ADDITIONAL OS VERSION INFORMATION : Microsoft Windows [Version 6.1.7601] A DESCRIPTION OF THE PROBLEM : javafxpackager.exe is not executable. Following Exception is thrown; > javafxpackager.exe Exception in thread "main" java.lang.UnsupportedClassVersionError: com/sun/javafx/tools/packager/Main : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) Could not find the main class: com.sun.javafx.tools.packager.Main. Program will exit. REGRESSION. Last worked in version 7u40 STEPS TO FOLLOW TO REPRODUCE THE PROBLEM : Execute "javafxpackager.exe" in a Windows command prompt. EXPECTED VERSUS ACTUAL BEHAVIOR : EXPECTED - We expect an executable and runnable javafxpackager tool which prints the usage help message. ACTUAL - Exception as described above. ERROR MESSAGES/STACK TRACES THAT OCCUR : Exception in thread "main" java.lang.UnsupportedClassVersionError: com/sun/javafx/tools/packager/Main : Unsupported major.minor version 52.0 at java.lang.ClassLoader.defineClass1(Native Method) at java.lang.ClassLoader.defineClassCond(ClassLoader.java:631) at java.lang.ClassLoader.defineClass(ClassLoader.java:615) at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141) at java.net.URLClassLoader.defineClass(URLClassLoader.java:283) at java.net.URLClassLoader.access$000(URLClassLoader.java:58) at java.net.URLClassLoader$1.run(URLClassLoader.java:197) at java.security.AccessController.doPrivileged(Native Method) at java.net.URLClassLoader.findClass(URLClassLoader.java:190) at java.lang.ClassLoader.loadClass(ClassLoader.java:306) at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301) at java.lang.ClassLoader.loadClass(ClassLoader.java:247) Could not find the main class: com.sun.javafx.tools.packager.Main. Program will exit. REPRODUCIBILITY : This bug can be reproduced always.

    JDK Bug System | 3 years ago | Webbug Group
    java.lang.UnsupportedClassVersionError: com/sun/javafx/tools/packager/Main : Unsupported major.minor version 52.0

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Root Cause Analysis

  1. java.lang.UnsupportedClassVersionError

    com/sun/javafx/tools/packager/Main : Unsupported major.minor version 52.0

    at java.lang.ClassLoader.defineClass1()
  2. Java RT
    ClassLoader.loadClass
    1. java.lang.ClassLoader.defineClass1(Native Method)
    2. java.lang.ClassLoader.defineClassCond(ClassLoader.java:631)
    3. java.lang.ClassLoader.defineClass(ClassLoader.java:615)
    4. java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
    5. java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
    6. java.net.URLClassLoader.access$000(URLClassLoader.java:58)
    7. java.net.URLClassLoader$1.run(URLClassLoader.java:197)
    8. java.security.AccessController.doPrivileged(Native Method)
    9. java.net.URLClassLoader.findClass(URLClassLoader.java:190)
    10. java.lang.ClassLoader.loadClass(ClassLoader.java:306)
    11. sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
    12. java.lang.ClassLoader.loadClass(ClassLoader.java:247)
    12 frames