java.lang.UnsupportedClassVersionError in Import Java Classes

Similar Questions

• java.lang.UnsupportedClassVersionError and Java versions

  Hello-

  I have provided some of our users with a pot that I compiled with Java 1.6. The jar consists of a single class. Users to run Java 7.  However, some of them receive this error:

  java.lang.UnsupportedClassVersionError: bad version major < class > offset = 6

  
  

  So, I checked the following:

  
  

  - java - verbose indicates the class has been compiled with Java 6:
  

  minor version: 0

  major version: 50

  - java-version indicates the user is running a newer version of java:

  1.7.0_67

  -the jar manifest States the following:

  Created by: 20.13 - b02 (Sun Microsystems Inc.)

  As I understand it, this means the java.lang.UnsupportedClassVersionError exception should not be made.

  
  

  So I am confused - is there something I can do to diagnose or fix this?

  
  

  
  

  Thanks for your help!

  It is clearly the problem of the management of versions. Re-compile all your classes with JDK 1.6 and deploy once more, if you don't know that users are running on JDK 1.7. Backward compatibility will never be a problem in the java programs have complied.

  On another note, in systems where you get this problem, go to the Java Control Panel and see the correct JRE version used by this particular user's system. Each system you have by default installed JRE and which will be used by browsers most of the time

• java.lang.UnsupportedClassVersionError when loading bridges IB connectors

  Passing of one of the problems to the other... Installing PeopleTools on OEL5 8.52. Everything works; Database, application server, Task Scheduler process etc. However when I try to load the Integration broker gateways connectors I get the following error:
  
  java.lang.UnsupportedClassVersionError: Bad version in .class file number
  
  8.52 came with JRE 1.6.0 installed in the PS_HOME directory. $JAVA_HOME here and $JAVA_HOME is one of the first variables in my $LD_LIBRARY_PATH. I created a new domain after setting this correctly, because initially the JRE directory of Tuxedo preceded that of PS_HOME. I modified it in the tux.env everything seems to point to the JRE in the PS_HOME now. I always get this error however and it seems I'm missing something. Does anyone have an idea? When executing "including java' get the path correct and 'java-version' specifies the correct version. I tried several solutions posted on support of Oracle, but nothing helped. More later certified Java version is the version 1.6.0_23 - b05, but I am unable to find a download for that location. I doubt, that it is necessary to update of the JRE, since it is already running on 1.6.0.

  No, sorry, perhaps misunderstanding. I was using this jdk for Weblogic installation, as it seems that you have done.
  The symbolic link to jre under $PS_HOME goes to $PS_HOME/jre1.6.0.

  Nicolas.

• ORA-29552: check warning: java.lang.UnsupportedClassVersionError

  Hello
  I am trying to load a class file into Oracle using loadjava and I get the following error:
  
  ORA-29552: check warning: java.lang.UnsupportedClassVersionError: helloworld (unsupported major.minor version 51.0)
  
  Without doubt, this is related to an inconsistency between the jdk I used to compile helloworld and the Oracle JVM? Or something like that?
  
  My JAVA_HOME is C:\Program Files (x 86) \Java\jre7\bin
  My version of javac used to compile the code is javac 1.7.0_15
  Java-version is '1.7.0_15 '.
  When I do a find on java.exe in the oracle installation directory (I'm under 11.2) I get
  
  J - PC:J > find - name java.exe
  ./Product/11.2.0/dbhome_1/JDK/bin/Java.exe
  ./Product/11.2.0/dbhome_1/JDK/JRE/bin/Java.exe
  ./Product/11.2.0/dbhome_1/JRE/1.5.0/bin/Java.exe
  
  Finally, the jdbc jar is ojdbc6.jar
  
  BTW, the code is just the ordinary Tester:
  

  import oracle.jdbc.driver.*;
  
  public class helloworld {
  
      public static String hello()
      {
          return "Hello World";
      }
  
      public static String hello(String s)
      {
          return "Hello " + s ;
      }    
      
      public static void main(String[] args)
      {
          helloworld.hello();
          helloworld.hello("Larry");
      }
  }

  How can I get this class file loaded? Thank you very much
  Jason

  >
  How can I get this class file loaded?
  >
  I suggest you load the file source instead. As cardan2 said all the class in the database files MUST be compatible with the internal JVM used by the database. For 11g versions it is Java 1.5 and the major version in the 1.5 Java class files is 49.

  You also have to take the same version in account number if you need load all the jar files in the DB. That the load will be successful if these classes have been compiled for a later version of compatibility of Java. ;

  If you load the source file and compiling the virtual machine JAVA DB will be used and you will not get this exception. You will also make sure that you use the correct support classes; for example, classes for the JDBC driver that you import will be versions of the JVM and those will NOT be the same as those of ojdbc6.jar.

  You must ensure that you are not currently using the JDBC classes or features that are not available in the version of DB of the driver.

  Using Java and JDBC in the database means that you might be able to take advantage of the internal JDBC driver for Oracle. Refer to the chapter "Server - Side internal Driver" of the Dev Guide JDBC for more details.
  http://docs.Oracle.com/CD/B28359_01/Java.111/b31224.PDF

  Overview of the Server-Side Internal Driver
  The server-side internal driver is intrinsically tied to Oracle Database and to the Java
  Virtual Machine (JVM). The driver runs as part of the same process as the database. It
  also runs within the default session, the same session in which the JVM was started.
  
  The server-side internal driver is optimized to run within the database server and
  provide direct access to SQL data and PL/SQL subprograms on the local database. The
  entire JVM operates in the same address space as the database and the SQL engine.
  Access to the SQL engine is a function call. This enhances the performance of your
  Java Database Connectivity (JDBC) applications and is much faster than running a
  remote Oracle Net call to access the SQL engine.
  
  The server-side internal driver supports the same features, application programming
  interfaces (APIs), and Oracle extensions as the client-side drivers. This makes
  application partitioning very straightforward. For example, if you have a Java
  application that is data-intensive, then you can easily move it into the database server
  for better performance, without having to modify the application-specific calls.
  

• java.lang.NoClassDefFoundError when calling a java class of BPEL

  Hello

  I'm calling a java class to convert JSON to XML using BPEL. I imported all the necessary jar files in the project and compile successfully done.

  But while running, I get the java.lang.NoClassDefFoundError: net/sf/json/JSON error.

  For this, I placed all the necessary pots under the path FUSION_HOME/Oracle_SOA1/soa/modules/oracle.soa.ext_11.1.1/ and restarted the server.

  But still, I get the same error when running.

  A I missed a step? Let me know the procedure to solve this problem.

  I have to run ant or change the file manifests after placing the pot?

  in a site I find that we must place the pots under < DOMAIN HOME > directory / lib. Is this correct?

  We use SOA suite 11.1.1.6.

  Thank you

  Terry

  Hello Terry,

  I'm not quite sure of what exactly would be the problem. Please go through this link and see if it helps: integrating Java and Java EE Code in a BPEL process

  Kind regards

  Karan

  Oracle Fusion Middleware Blog

• Java class import error

  Hello
  
  I'm impossible to import the java class in the peoplecode. while I import in my peoplecode I got the error message
  as,
  
  Appeal of Java java.util.regex.Pattern.matcher: no matching overload. TEST (2 743). SAVE_PB. FieldChange PCPC:379 statement: 4
  
  While calling the Java method, no overhead was found with a parameter signature that corresponds to the supplied parameter types.*
  
  the following codes are that I used to import.
  
  Local JavaObject & type = GetJavaClass ("java.util.regex.Pattern");
  Local JavaObject & match = GetJavaClass ("java.util.regex.Matcher");
  
  someone suggest me a better solution to import the class into my peoplecode.

  Thanks for posting your complete code.

  Local JavaObject &jstring = CreateJavaObject("java.lang.String", TEST.INPUTSTRING.value);
  
  &matcher = &pattern.matcher(&jstring);
  

  About:

  Local JavaObject & match = GetJavaClass ("java.util.regex.Matcher");

  You don't need that because you don't need to import something you get by the way. In this case, you get & match of & model.

• import java class of forms 6i

  Dear people
  I want to import the very simple java class of forms 6i, I went to programs then I choose to import java classes and then it gives me the error THAT BDP-UJ1001 could not create the Java virtual machine.
  
  Please tell me how to solve the problem.
  Yasser

  This option only works for the deployed Web Forms 6i version. Who does not work with C/S mode, because the C/S mode does not use Java at all.

  François

• ODI - MySQL Connector Java 5.1.13 - java.lang.UnsupportedClassVersionError

  I use ODI 10.1.3.5 tries to connect to a version of database MySql 5.1.45
  
  I downloaded the mysql-connector - java5.1.13 - bin and installed in the oracledi\drivers directory
  
  I created the "Data Server" under the MySQL node successfully in the tab of the physical Architecture (Topology Manager).
  I used the test button and the connection is successful.
  
  Here's the problem:
  
  When I try to create the schema 'physical' I get an error
  
  java.lang.UnsupportedClassVersionError: com/mysql/jdbc/driver (unsupported major.minor version 49.0)
  
  Help
  
  I also tried the previous MySQL connector/j 5.0.8 I wasn't able to create "Data Server" with this driver.
  Any help is greatly appreciated.

  When I looked carefully at the jdbc, the JDBC url: / / is repeated twice. Correct and try again.
  JDBC:MySQL://JDBC:MySQL://10.128.8.134:3306 / alfresco333

• java.lang.UnsupportedClassVersionError

  When I compile my java file, there is no error. But when I run this code, it is in error:
  java.lang.UnsupportedClassVersionError: MyClass (unsupported major.minor version 50.0).
  
  What is this error? Why I get this error? How to solve this error?

  I suspect that another JRE is intalled on your computer, maybe even that some third-party software, and the path variable contains the path to the java.exe in front of your "last updated."

  Check the contents of the PATH system variable.

  DB

• Impossible to import a java class

  I tried to import the following java class
  
  Import oracle.adf.controller.faces.context.FacesPageLifecycleContext;
  
  But it gives an error saying not found imoport.
  
  Here is the link for the [API referece | http://download.oracle.com/docs/cd/B25221_04/web.1013/b25779/oracle/adf/controller/faces/context/FacesPageLifecycleContext.html] this class
  
  Can anyone suggest a solution for this.
  
  I use JDeveloper 11.1.1.2.0
  
  Thank you
  Melaka
  
  Published by: Melaka Gunasekara on March 2, 2010 22:57

  you have ADF Faces Databinding Runtime added to the library and the classpath in your project properties.

• java.lang.IllegalAccessError: tried to access class oracle.jdbc.driver.Orac

  Hello world
  
  I have a problem with ojdbc14.jar is.
  My request, which is a J2EE (JSP) application, grows on JDeveloper 10.1.3.3 and works correctly. But I can't run my application on JDev 11.1.1.0.1.
  The problem is (I think) I can access at design time ojdbc.jar, but in the moment of execution, JDeveloper gives me below the exception when I press the run button.
  
  
  Error 500 - Internal server error
  
  java.lang.IllegalAccessError: tried to access class class oracle.jdbc.driver.OraclePreparedStatement UtilityPack.DBPack.TPreparedStatement
  to UtilityPack.DBPack.TPreparedStatement. (TPreparedStatement.java:72) (== > > tihis is my class)
  at UtilityPack.HCombos.fillCombos (HCombos.java:59)
  at jsp_servlet.__index._jspService(__index.java:158)
  at weblogic.servlet.jsp.JspBase.service(JspBase.java:34)
  to weblogic.servlet.internal.StubSecurityHelper$ ServletServiceAction.run (StubSecurityHelper.java:227)
  at weblogic.servlet.internal.StubSecurityHelper.invokeServlet(StubSecurityHelper.java:125)
  at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:292)
  at weblogic.servlet.internal.ServletStubImpl.onAddToMapException(ServletStubImpl.java:408)
  at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:318)
  at weblogic.servlet.internal.ServletStubImpl.execute(ServletStubImpl.java:175)
  to weblogic.servlet.internal.WebAppServletContext$ ServletInvocationAction.run (WebAppServletContext.java:3498)
  at weblogic.security.acl.internal.AuthenticatedSubject.doAs(AuthenticatedSubject.java:321)
  at weblogic.security.service.SecurityManager.runAs (unknown Source)
  at weblogic.servlet.internal.WebAppServletContext.securedExecute(WebAppServletContext.java:2180)
  at weblogic.servlet.internal.WebAppServletContext.execute(WebAppServletContext.java:2086)
  at weblogic.servlet.internal.ServletRequestImpl.run(ServletRequestImpl.java:1406)
  at weblogic.work.ExecuteThread.execute(ExecuteThread.java:201)
  at weblogic.work.ExecuteThread.run(ExecuteThread.java:173)
  
  Could you please help? You have an idea? I tried, but I couldn't find the problem.
  Everything would be great.
  
  Thanks in advance.

  And you can read this.

  http://forums.Oracle.com/forums/Ann.jspa?annID=201

  Sascha

• Import of java classes to the project UI model

  Dear all,
  
  With Jdeveloper 11.1.1.3, I have a java class as UI and try to call the java class implementation for an entity class... can I do this or that is not supported?
  
  Thanks for all,

  Delta,

  business rule validation does not work for me I really should write a java code to perform validation of my...

  This is why I suggested you use a validator method, you know, a Java method that performs validation.

  John

• pl/sql appellant java class member function obtains ora-00932 in 11g.

  Call a member function of class of java from a pl/sql script, I get an error ora-00932.

  ORA-00932: inconsistent data types: waiting for an IN argument in position 1 which is an instance of an O

  convertible to an instance of a user defined class Java got a type of Oracle that could not be converted

  The code works fine when the java function is declared static.   However, since there could be thousands of users hitting the function at the same time and there is no instance of the object, I wasn't sure if it would be a matter of how oracle manages memory for each user in a session, if it would not be a problem, I can go forward with this approach.   However, I have greatly simplified this for an example that reproduces the problem.

  Create the oracle type:

  CREATE OR REPLACE TYPE MyObject AS OBJECT

  (

  col1Data VARCHAR2 (10),

  MEMBER FUNCTION createData

  RETURN VARCHAR2 AS LANGUAGE JAVA

  NAME "java.lang.String return MyObject.createData ().

  );

  Java code:

  CREATE OR REPLACE AND FIX JAVA SOURCE NAMED 'MyObject' AS

  import java. IO;

  public class MyObject

  {

  private String col1Data;

  public void createData)

  {

  System.out.println ("col1:" + col1Data);

  }

  }

  Java function call vai pl/sql function:

  FUNCTION to CREATE or REPLACE fn_myobject

  (col1 IN varchar2)

  RETURN VARCHAR2

  AS

  p_rc varchar2 (100);

  myObj MyObject;

  BEGIN

  myObj: = new MyObject (col1);

  p_rc: = myObj.createData ();   -This line gets an error 00932

  RETURN p_rc;

  END;

  /

  And finally, the script from sqlplus to test:

  Set serverout

  call dbms_java.set_output (50);

  Set line 120

  declare

  VARCHAR2 (64) RC: = ";

  R1 varchar2 (64): = 'abc ';

  Start

  RC: = fn_myobject (r1);

  end;

  /

  I tried all sorts of things without success.   Any ideas on this would be most appreciated.  It is once again, 11g.

  Thank you.

  MarkF says:

  If you go back to the example code I posted, it is mapping a java class oracle object.

  No, it isn't.

  Your example simply sets an Oracle object type whose member createData function is implemented in Java.

  The fact that the implementing class has the same name does not have a direct mapping between the class and the type of Oracle.

  The important part to read and understand in the link I posted is:

  A call specification outlines the top level of an Oracle database Java method entry point. So, you can publish only public static methods.

  However, there is an exception. You can publish instance methods as members of an SQL object type methods.

  You are in the first case.

  To be in the exceptional cases and be able to publish instance methods, the Java class must implement SQLData.

  See the latest example here:

  https://docs.Oracle.com/database/121/JJDEV/chsix.htm#JJDEV13273

  Adapted to your example:

  CREATE OR REPLACE AND compile JAVA SOURCE NAMED "MyObject" AS
  import java.sql.*;
  
  public class MyClass implements SQLData
  {
    // Implement the attributes and operations for this type.
    private String col1Data;
  
    public String createData ()
    {
        System.out.println ("col1: " + col1Data);
        return col1Data;
    }
  
    // Implement SQLData interface.
    String sql_type;
  
    public String getSQLTypeName() throws SQLException
    {
      return sql_type;
    }
  
    public void readSQL(SQLInput stream, String typeName) throws SQLException
    {
      sql_type = typeName;
      col1Data = stream.readString();
    }
  
    public void writeSQL(SQLOutput stream) throws SQLException
    {
      stream.writeString(col1Data);
    }
  }
  /
  

  CREATE OR REPLACE TYPE MyObject AS OBJECT
  (
    col1Data  VARCHAR2(10),
    MEMBER FUNCTION createData
            RETURN VARCHAR2 AS LANGUAGE JAVA
      NAME 'MyClass.createData() return java.lang.String'
  );
  /
  

  Test:

  SQL> exec dbms_java.set_output(1000)
  
  PL/SQL procedure successfully completed.
  
  SQL> set serverout on
  SQL>
  SQL> select MyObject('ABC').createData() from dual;
  
  MYOBJECT('ABC').CREATEDATA()
  --------------------------------------------------------------------------------
  ABC
  
  col1: ABC
  

• Call a java class in my database to an oracle stored procedure oracle

  my oracle stored procedure is:
  create or replace
  PROCEDURE openpdffile
  IN THE JAVA LANGUAGE
  NAME 'pdfopenbook.mainbook () ';
  
  It is valid and so is the java class;
  import java.sql. *;
  Oracle.jdbc import. *;
  
  public class pdfopenbook //class pdfopen
  {
  Public Shared Sub mainbook (args [] //main function) of channels
  {
  try try statement
  {
  Runtime.getRuntime () .exec ("rundll32 url.dll, FileProtocolHandler" + "c:\\temp
  final_book.pdf");
  Runtime.getRuntime () .exec ("rundll32 url.dll, FileProtocolHandler" + "sol.exe");
  } catch (Exception e) //catch all exceptions here
  {
  System.out.println ("Error" + e); printing error
  }
  }
  }
  
  
  but I get the error:
  onnecting to the caprs of the database.
  ORA-29531: no mainbook method in the pdfopenbook class
  ORA-06512: at "CAPRS. OPENPDFFILE', line 1
  ORA-06512: at line 2
  Process is complete.
  The caprs database disconnection.
  
  
  He said that there is no mainbook method, but there is, what I am doing wrong?
  Thank you
  Doug

  Pass the String [] as an argument to mainbook():

  create or replace PROCEDURE openpdffile
  AS LANGUAGE JAVA
  NAME 'pdfopenbook.mainbook(java.lang.String[])';
  

  Do you have posted on the forum of the database?

  Kind regards

  Nick

• Call the JavaScript file java class in the native blackberry development.

  
  

  What you are looking for is the ScriptableFunction class.

  You can extend the script engine of a JavaScript object name to a ScriptableFunction Java class mapping.  In this example, if you called foo. JavaScript bar(), the BrowserField would facilitate a call to the invoke() method defined in the MyScriptableFunction() class:

  protected BrowserField _browserField   = null;
  _browserField = new BrowserField();
  _browserField.extendScriptEngine("foo.Bar", new MyScriptableFunction());
  

  Then you set your ScriptableFunction class like this and fill it with some Java code, you need.  Note: it only accepts strings as input parameters.

  import net.rim.device.api.script.ScriptableFunction;
  
  /**
   * @description Demonstration of using the ScriptableFunction class added to version 5.0 of the BlackBerry Device
   *              Software
   * @version 1.0
   * @author Adam Stanley, Developer Relations
   * @category BlackBerry BrowserField Development: ScriptableFunction API
   * @see http ://www.blackberry.com/developers/docs/5.0.0api/net/rim/device/api/script/ScriptableFunction .html
   */
  
  /**
   * This class can be used to represent a function in the JavaScript environment.
   */
  public class MyScriptableFunction extends ScriptableFunction
  {
  
      /**
       * User has invoked this ScriptableFunction from the JavaScript engine This example shows how to open the Messages
       * application and create a new message
       */
      public Object invoke(Object obj, Object[] args) throws Exception
      {
          if (args.length == 3)
          {
  
              String param1 = args[0].toString();
              String param2 = args[1].toString();
              String param3 = args[2].toString();
  
              //Do something
          }
          return Boolean.TRUE; //Always
      }
  
  }
  

  Hope that helps.