After downloading, you must keep track of where you left it as you will need to supply the full pathname as one of the VM arguments for your program. The same jar is used for both Java 8 and Java 11. My advice would be to install it separately from your regular version of JDK 11 and then choose which one to use in your debug session via configuration options in your IDE. Instead, you need to install a special version of the JDK that you can download from here. Install DCEVM in Java 11įor Java 11, there is no patch program. In general this should not be a big problem if you run it only on a development machine which usually sits protected behind a corporate firewall. Of course, using an ancient version of the JDK introduces a certain security risk. You can find archived versions of the JDK here. The DCEVM provided on Github will simply not work with later versions. Important note for Windows: the latest supported version of Java 8 is 1.8.0_u 181. ![]() A special version of the main jvm library is installed (in jre/lib/dcevm/) which is used instead of the vanilla library when starting the JVM with this command line argument: java -XXaltjvm=dcevm -version Patching the JDK in this way does not alter the Java VM itself. Therefore I recommend the other choice in the patcher program, Install DCEVM as altjvm. If you select the replace option, you won’t need the -XXaltjvm argument in your program launch VM arguments but you also won’t be able to switch hotswapping off. The patcher program offers you a choice to either replace the standard JVM with DCEVM or install DCEVM alongside as altjvm. The patcher program itself is a Java jar called DCVM-8u181-installer-build2.jar which you can download from here. Download the patcher program, start it and then select the directory where your JDK lives in order to patch it. You can turn an existing installation of the JVM into a DCEVM version by patching it.
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