Differences between JVM 1.4 and 1.5

Hi,
I am trying to deploy an application in JDev 10.1.2.1811. We deploy to a customer's test server that runs JVM 1.5 64 bit, but the customer's production environment is 1.4 32-bit.
On the test server, the application behaves correctly. In the production environment, however, the application starts to get real flaky (presents blank text boxes that should have information) etc.
Am I correct in assuming that the JVM is the issue here? How can I correct this issue short of asking the customer to update their version of JVM?
Thanks in advance.
Jim McEvoy

Hi,
try and compile the application wth Java 1.4. There is an option on the JDeveloper 10.1.3 project that allows you to set the compiler version
If the application compiles then it should run. If not then you possibly used Java5 specific language constructs
Frank

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