How to Enable Oracle Java in Your Web Browsers on Ubuntu Linux

This updated guide examines How to Enable Oracle Java in Your Web Browsers on Ubuntu Linux and organizes the essential facts, background, and practical takeaways in clear American English.

Method 1of 2:

Google Chrome

32-bit Oracle Java instructions:

1. Issue the following commands.
   • Type/Copy/Paste: sudo mkdir /opt/google/chrome/plugins
     • this will create a directory called /opt/google/chrome/plugins
   • Type/Paste/Copy: cd /opt/google/chrome/plugins
     • this will change you into the google chrome plugins directory,make sure you are in this directory before you make the symbolic link
   • Type/Paste/Copy: sudo ln -s /usr/local/java/jre1.7.0_40/lib/ i386 / libnpjp2.so
     • this will create a symbolic link from the Java JRE( Java Runtime Environment ) plugin libnpjp2.so to your Google Chrome web browser

64-bit Oracle Java instructions:

1. Issue the following commands.
   • Type/Copy/Paste: sudo mkdir /opt/google/chrome/plugins
     • this will create a directory called /opt/google/chrome/plugins
   • Type/Paste/Copy: cd /opt/google/chrome/plugins
     • this will change you into the google chrome plugins directory,make sure you are in this directory before you make the symbolic link
   • Type/Paste/Copy: sudo ln -s /usr/local/java/jre1.7.0_40/lib/ amd64 / libnpjp2.so
     • this will create a symbolic link from the Java JRE( Java Runtime Environment ) plugin libnpjp2.so to your Google Chrome web browser

Reminders:

1. Note: Sometimes when you issue the above command you may receive a message which states:
   • ln: creating symbolic link `./libnpjp2.so': File exists
   • To correct this issue simply remove the previous symbolic link using the following command:
   • Type/Copy/Paste: cd /opt/google/chrome/plugins
   • Type/Copy/Paste: sudo rm -rf libnpjp2.so
   • Make sure you are in the /opt/google/chrome/plugins directory before you issue the command
2. Restart your web browser and go toJava Testerto test if Java is functioning in your web browser.

Method 2of 2:

Mozilla Firefox

32-bit Oracle Java instructions:

1. Issue the following commands.
   • Type/Paste/Copy: cd /usr/lib/mozilla/plugins
     • this will change you into the directory /usr/lib/mozilla/plugins, create this directory if you do not have it
   • Type/Paste/Copy: sudo mkdir /usr/lib/mozilla/plugins
     • this will create the directory /usr/lib/mozilla/plugins, make sure you are in this directory before you make the symbolic link
   • Type/Paste/Copy: sudo ln -s /usr/local/java/jre1.7.0_40/lib/ i386 / libnpjp2.so
     • this will create a symbolic link from the Java JRE( Java Runtime Environment ) plugin libnpjp2.so to your Mozilla Firefox web browser

64-bit Oracle Java instructions:

1. Issue the following commands.
   • Type/Paste/Copy: cd /usr/lib/mozilla/plugins
     • this will change you into the directory /usr/lib/mozilla/plugins, create this directory if you do not have it
   • Type/Paste/Copy: sudo mkdir /usr/lib/mozilla/plugins
     • this will create the directory /usr/lib/mozilla/plugins, make sure you are in this directory before you make the symbolic link
   • Type/Paste/Copy: sudo ln -s /usr/local/java/jre1.7.0_40/lib/ amd64 / libnpjp2.so
     • this will create a symbolic link from the Java JRE( Java Runtime Environment ) plugin libnpjp2.so to your Mozilla Firefox web browser

Reminders:

1. Note: Sometimes when you issue the above command you may receive a message which states:
   • ln: creating symbolic link `./libnpjp2.so': File exists
   • To correct this issue simply remove the previous symbolic link using the following command:
   • Type/Copy/Paste: cd /usr/lib/mozilla/plugins
   • Type/Copy/Paste: sudo rm -rf libnpjp2.so
   • Make sure you are in the /usr/lib/mozilla/plugins directory before you issue the command
2. Restart your web browser and go toJava Testerto test if Java is functioning in your web browser.