I would like to have the procedure to compile iText 5.5.x using Javac 1.3.1.
We have a old application that can perform java calls but it is only certified with Java 1.3.1.
Note that I'm novice to java, so a step by step would be nice.
Thanks.
Related
I am upgrading openwebbeans project from openJDK12 to OpenJDK17 . currently webeans version is being used 2.0.10 . When upgrading application is not coming up. Is there any apachewebbeans version supporting java 17 and in near future any plan?
UPDATE: OWB-2.0.27 is compatible to JDK17 without having to change the xbean- libraries.
According to this site (https://openwebbeans.apache.org/download.html) OWB-2.0.x should support Java17.
It uses a shaded version of ASM-9 (Java17 support) for building our proxies and requires JavaSE 8 as minimum version.
But i have also problems getting the OWB-2.0.26 version to run with JDK17 because of the used xbean-asm9-shaded lib which only supports java up to version 16.
I have Apache NetBeans IDE 10. When I try to install the nbscala plugins for Scala, I get an issue:
Some plugins require plugin External Execution Base API to be installed
How do I fix the issue?
The solutions for NetBeans 8.2 don't work.
Product Version: Apache NetBeans IDE 10.0 (Build incubator-netbeans-release-380-on-20181217)
nbscala plugin version: 20190313-b8a704f058cc
We are currently using JasperReports Library 4.4.7 with JDK 1.6_23 on SAP NetWeaver 7.3 and we are planing to upgrade to 5.5.2, is it compatible with our environment JDK (1.6_23) since the library is compiled using JDK 1.7 ?
If the library is compiled using JDK 1.7, it won't run on Java SE 6-compatible environment. You would need to compile it (and jar) yourself -- I don't know the library, but it's likely to fail. Perhaps they switched to Java 7 compilation to use Java 7 features.
You may also "downgrade" the compiled byte code of the library to be Java 6 compliant -- see Compiling Java 7 to Java 6 (I have no experience with that either).
I have intellij 13 ultimate.
I had scala 2.10.3 installed, and recently upgraded to 2.11 using homebrew.
When I open a sbt project, it may have a different scala version and if it does then it starts to download etc.
Will IntelliJ automatically use the correct compiler for a sbt project once it finishes downloading everything?
I currently have these errors which I'm not sure how to fix:
I am using the Mechanical Turk command line tools on Windows. When I try to run a command (e.g., getBalance, createQualificationType), I always get the following error:
Exception in thread "main" java.lang.UnsupportedClassVersionError: Bad version number in .class file
Any clues as to what I could look at to fix this would be greatly appreciated!!
I have tried updating my key and secret key to no avail.
Note: I can get help for the commands by using -help, but I cannot run the commands themselves.
This error occurs whether I am running either JRE 1.5.0_06-b05, 1.5.0_22-b03, or 1.7.0_17-b02. The command line tools documentation states, "You must have the Java JRE 1.5.X (JRE 5). The Command Line Tools are not 100% compatible with JRE 6."
Since I am using the version of the command line tools packaged with JRE, I have also uninstalled my JRE. I get the same error.
UnsupportedClassVersionError means that you are trying to use a Java class that was compiled with a newer JDK on an older Java runtime environment. For example, you have a class that was compiled with JDK 7, and you are trying to use it on a Java 6 or older runtime environment.
Java is downwards compatible; newer Java runtime environments can run Java classes compiled with older versions without modifications, but not the other way around.
Check with what version the class you are trying to use was compiled, and use a Java runtime environment with the same version or newer to run the class.
You can check your Java runtime environment and JDK versions with:
java -version
javac -version
Apparently, the CLT installer installs a JRE that is too old to run the tools included in the installer. Seems like a serious bug (certainly annoying).
You can fix by installing and using a more recent JDK.
This post contains instructions on how to do so:
https://forums.aws.amazon.com/message.jspa?messageID=388586#388585