Download Java Runtime Environment (JRE) for Windows PC 10, 8/8.1, 7, XP. Java Runtime Environment (JRE) new version for Windows PC. Java Runtime Environment (JRE) Latest Version setup for Windows 64/32 bit. Java Runtime Environment is a software package that contains what is required to run a Java program. After installing Windows 10, an error message came up saying invalid Java runtime environment. Is Java required to run Windows 10? If so, how do I install it?
Oracle's Java Runtime Environment (JRE) for 64-bit Windows PCs contains the Java Virtual Machine, software libraries, components, and plug-ins that tons of programs, media, and Web sites need to display advanced multimedia content and animation. Version 7 Update 55 of Java's Standard Edition addresses 37 security vulnerabilities while reducing the frequency of security notifications in certain installations.
Pros:
Answers the 64-bit question: Running 32-bit Java on 64-bit Windows involves compromises, such as Update issues. This version of Java is designed specifically for 64-bit Windows.
Plug-ins: The Java plug-in is critical to many Web applications, while Java Web Start deploys standalone apps over networks.
JavaFX: JRE now includes Java FX version 2.2.55.
Cons:
Security: Some computer experts warn of vulnerabilities in Java that updates have failed to correct.
8 is enough? Java SE 8 is a major update that was released prior to version 7.55's release, though a major security update to version 8 has also been released. Confused? We don't blame you, but Java always bears watching, so check on your system's needs before upgrading.
Bottom Line:
If you're running 64-bit Windows, check your Java version and update it if necessary to JRE SE 7.55 for security and stability.
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What do you need to know about free software?
Is there any command to check the active (since the machine can have more than 1 JRE installed) JRE installation directory under Windows. For linux, the corresponding command is
Is there any Windows equivalent ?
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closed as off topic by oers, Christoph, hochl, Daniel A. White, Edwin de KoningOct 26 '12 at 14:08
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5 Answers
where java
works for me to list all java exe but java -verbose
tells you which rt.jar
is used and thus which jre (full path):Edit: win7 and java:
user180100
Not as a command, but this information is in the registry:
- Open the key
HKEY_LOCAL_MACHINESOFTWAREJavaSoftJava Runtime Environment
- Read the
CurrentVersion
REG_SZ - Open the subkey under
Java Runtime Environment
named with theCurrentVersion
value - Read the
JavaHome
REG_SZ to get the path
For example on my workstation i have
So my current JRE is in
C:Program FilesJavajre6
globglob
Following on from my other comment, here's a batch file which displays the current JRE or JDK based on the registry values.
It's different from the other solutions in instances where java is installed, but not on the
PATH
.globglob
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