Ubuntu install JDK with environment variable configuration
Blog Category:Ubuntu install JDK with environment variable configuration
1. getconf LONG_BIT View the system bits and download the corresponding jdk.
My system is 32-bit, so the downloaded jdk is: jdk-8u77-linux-i586.gz.
And put it in the /home/injavawetrust/software directory.
2. Create a directory /usr/lib/jvm so that the downloaded and decompressed packages can be placed in this directory.
cd /usr/lib
sudo mkdir jvm
3. Unzip and put the unzipped jdk folder in the /usr/lib/jvm directory
cd /home/injavawetrust/software
sudo tar zxvf jdk-8u77-linux-i586.gz -C /usr/lib/jvm
Fourth, enter the /usr/lib/jvm directory
cd /usr/lib/jvm
5. Rename the decompressed jdk folder to java1.8
sudo mv jdk1.8.0_77 java1.8
6. First enter the vi editor, and then enter the following command
vi ~/.bashrc The command
entered in the opened file is as follows:
Seven, execute the command
source ~/.bashrc
8. Test
The following message appears: 
version "1.8.0_77" 
(TM) SE Runtime Environment (build 1.8.0_77-b03) HotSpot(TM) Client VM (build 25.77-b03, mixed mode)
jdk installed successfully.
Nine, write a piece of java code to test
Ubuntu install JDK with environment variable configuration
1. getconf LONG_BIT View the system bits and download the corresponding jdk.
My system is 32-bit, so the downloaded jdk is: jdk-8u77-linux-i586.gz.
And put it in the /home/injavawetrust/software directory.
2. Create a directory /usr/lib/jvm so that the downloaded and decompressed packages can be placed in this directory.
cd /usr/lib
sudo mkdir jvm
3. Unzip and put the unzipped jdk folder in the /usr/lib/jvm directory
cd /home/injavawetrust/software
sudo tar zxvf jdk-8u77-linux-i586.gz -C /usr/lib/jvm
Fourth, enter the /usr/lib/jvm directory
cd /usr/lib/jvm
5. Rename the decompressed jdk folder to java1.8
sudo mv jdk1.8.0_77 java1.8
6. First enter the vi editor, and then enter the following command
vi ~/.bashrc The command
entered in the opened file is as follows:
Seven, execute the command
source ~/.bashrc
8. Test
The following message appears: version "1.8.0_77" (TM) SE Runtime Environment (build 1.8.0_77-b03) HotSpot(TM) Client VM (build 25.77-b03, mixed mode)
jdk installed successfully.
Nine, write a piece of java code to test