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I'm working on a web site project with a Java component and am currently testing for cross-browser compatibility. Most is fine but the Java part won't load on 64-bit browsers. Looks like I need a 64-bit JRE to test. Where does one download the (off-line) 64-bit Java runtime installer for Windows?
Notice that these environment variables are derived from the "root" environment variable JAVA_HOME. This makes it easy to update your environment variables when updating the JDK. Just point JAVA_HOME to the fresh installation. There is a blogpost explaining the rationale behind all these environment variables. Optional recommendations
I get this error when I try to do anything with Java in command prompt: Error opening registry key 'Software\\JavaSoft\\Java Runtime Environment.3' Error: could not ...
Generally if something works on various computers but fails on only one computer, then there's something wrong with that computer.
20 de ago. de 2014 · Run Java with -Dsun.java2d.d3d=false JVM option or set J2D_D3D=false environment variable. This would definitely help, though Java will not make use of Direct3D acceleration. Share
7 de mai. de 2014 · If you're not messing with anything that would cause this directly (which basically means using native code or libraries that call native code) then it's almost always down to a bug in the JVM or hardware issue.
16 de nov. de 2021 · I recently installed Java (Java Runtime 1.8.121) to my machine. I need to set up JAVA_HOME and set the variable from the Java folder where it installed. Everywhere I have looked online says the Java folder should be located in Program files (x86), however, it is nowhere to be found. Its not in program files (x86), not in program files.
15 de dez. de 2009 · The Java Runtime Environment (JRE) provides the libraries, the Java Virtual Machine, and other components to run applets and applications written in the Java programming language. In addition, two key deployment technologies are part of the JRE: Java Plug-in, which enables applets to run in popular browsers; and Java Web Start, which deploys standalone applications over a network.
22 de mar. de 2010 · On windows 7 and for JDK6, I had to add -Duser.timezone="Europe/Sofia" to the JAVA_TOOL_OPTIONS system variable located under "My computer=>Properties=>Advanced System Settings=>Environment Variables". If you already have some other property set for JAVA_TOOL_OPTIONS just append a space and then insert your property string.
Run: java -X for details. The options you're looking for are -Xmx and -Xms (this is "initial" heap size, so probably what you're looking for.) Some products like Ant or Tomcat might come with a batch script that looks for the JAVA_OPTS environment variable, but it's not part of the Java runtime.
