Thread: set up java (jdk/jre, path) in windows 7

Hi,

I got a new laptop with win 7 64 bits. I Installed eclipse helios, but I have some doubts with the setting up

When I open eclipse I got this error:
Capture2.jpg

In eclipse, Properties ->Java build path I have jre7


C:\Program Files (x86)\Java\jre7\bin

Which I guess is JRE version 7. But in my command line I have:

K:\>java -version
java version "9.0.1"
Java(TM) SE Runtime Environment (build 9.0.1+11)
Java HotSpot(TM) 64-Bit Server VM (build 9.0.1+11, mixed mode)

the file eclipse.ini contains:

-startup
plugins/org.eclipse.equinox.launcher_1.1.0.v20100507.jar
--launcher.library
plugins/org.eclipse.equinox.launcher.win32.win32.x86_1.1.1 .R36x_v20100810
-product
org.eclipse.epp.package.java.product
--launcher.defaultAction
openFile
--launcher.XXMaxPermSize
256M
-showsplash
org.eclipse.platform
--launcher.XXMaxPermSize
256m
--launcher.defaultAction
openFile
-vmargs
-vm
C:\Program Files (x86)\Java\jre7\bin\javaw.exe
-Dosgi.requiredJavaVersion=1.7
-Xms40m
-Xmx512m

Do I need to add a PATH, as environment variable?

If I run my app I got this:

Capture5.jpg

What am I missing?
Thank you in advance

Hi,

In general, if "java -version" returns something good (like in your case), then there's no need to tinker with the PATH environment variable.

What I believe may be happening is that Eclipse is setup for an older version of Java as the compiler compliance level:

https://stackoverflow.com/questions/...-in-class-file

Note this is not the same thing as the build path. So, you have both Java 7 and Java 9 installed. The response to "java -version" says Java 9 is the default (according to PATH). You have Eclipse setup to use Java 7 for the build, but it seems like the Eclipse project's compliance level is set to an older Java version.

Hope that helps!

Originally Posted by BinaryDigit09

Hi,

In general, if "java -version" returns something good (like in your case), then there's no need to tinker with the PATH environment variable.

What I believe may be happening is that Eclipse is setup for an older version of Java as the compiler compliance level:

https://stackoverflow.com/questions/...-in-class-file

Note this is not the same thing as the build path. So, you have both Java 7 and Java 9 installed. The response to "java -version" says Java 9 is the default (according to PATH). You have Eclipse setup to use Java 7 for the build, but it seems like the Eclipse project's compliance level is set to an older Java version.

Hope that helps!

Thank you for your reply!

Should I change my java version to 7?

I think you need to change the project's compiler compliance level in Eclipse. See the screenshot in that StackOverflow link.