I am fine with the default location. Click on "Install" and accept the software license. I got an error message that the Eclipse servers did not respond fast enough. I retried the installation and it worked out in the end. At the end of the installation process you can decide to launch the application. We will still need to install. Eclipse will ask you to choose a workspace. The default option is fine with me. Click on "OK" to proceed.
Eclipse will great you with a welcome screen. So leave Eclipse open, but do not do anything with it yet. Visit https: Once the download is complete uncompress the file. Do not leave LeJOS in the download folder. Move it to a permanent location, such as your Documents folder.
Eclipse IDE for Java EE Developers
In the "Help" menu select "Install New Software…". Afterwards, click on "OK". I was unable to install the Plugin through the repository and I was unable to find out why it does not work. So on to the alternative way of installing it. Click on "OK" and then on "Cancel" to leave this window. After Eclipse restarts you need to enter the Preferences, which are available under the Eclipse Menu. Click on "OK" to complete the setup. Use the "Add" button to add any missing JREs to the list. You need to find the folder that contains the "lib" and "bin" directories.
Setup Version 7 as the default, since you will be building your EV3 programs towards that target. Once the card is in the slot and the brick boots up it will automatically start LeJOS. If you remove the card and reboot you will be back to the original firmware. I put a SD card into my card reader, but it is formated for a Mac. I therefore had to erase it using the Disk Utility that comes with every Mac.
If you card is already in the FAT32 format then you do not need to do anything. Next we need to uncompress the lejosimage. You can either just double click on it or use the right mouse click to open the file with the Archiver Utility that comes with every Mac. Oracle ask you to login with a free Oracle account to download the file. I had to create an account and afterwards the download started immediately.
Do not uncompress the file. Just copy it directly. Make sure that you properly unmount the SD card from your computer before taking it out from the reader. Then insert the card into the EV3. I attached a short strip of take so that I can easily take the card out again. Once the installation is complete you will be created with the official LeJOS menu. So far so good.
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Give your project a name but avoid spaces. My eclipse. You can configure it similarly for Windows or Linux operating systems.
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Just change the JDK bin directory path accordingly. If you are getting java. PermGen space error, mostly when you are working on larger code base, doing maven update for large projects etc. Below is the configuration to increase permgen space to MB in eclipse. Note that there is no more Permgen space from Java 8 onwards, so setting this option will have no effect.
Where is Java installed on my Mac OS/X system?
However you will also not get out of memory error because of permgen space. If you are getting OutOfMemoryError related to Heap space, then you can try to increase the maximum heap size available to eclipse. You can easily do it by editing -Xmx value. For example, below snippet will increase the eclipse heap size to 2 GB. If you have come this far, it means that you liked what you are reading.
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Where is Java installed on my Mac OS/X system? • Crunchify
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