It is possible for the version of the JRE to be different than the version of the JDK. You can determine which version of the JDK is the default by typing java -version in a Terminal window. If the installed version is 7u55, you will see a string that includes the text 1.7.0_55....
Step 1: Check If Java is Installed To begin with, let’s check ifJavais installed in theArch Linuxusing the following command. $ java -version OR $ which java Check Java Installation on Arch Linux From the output above, it evident thatJavais missing. Let’s now proceed and install both...
Verify Java is on the PATH To validate the successful install of Java on Ubuntu, and to ensure the JDK’s bin directory is accessible through the OS’s PATH variable, issue the following command: java -versionopenjdk version "21.0.5" 2024-10-15 OpenJDK Runtime Environment (21.0.5+11-1...
Your Java installation will still run if you don’t set JAVA_HOME, but this system variable accomplishes two important purposes: It tells programs that have a Java dependency on where the JDK is installed. If multiple JDKs are installed, JAVA_HOME points to the preferred Java instance to us...
You may need the JDK in addition to the JRE in order to compile and run some specific Java-based software. To install the JDK, execute the following command, which will also install the JRE: sudoaptinstalldefault-jdk Copy Verify that the JDK is installed by checking the version ofjavac,...
Check to see if Java is installed by typing: java -version If Java isn't already installed, type this command: sudo apt install default-jre Enter your password. TypeYto confirm it, and then pressEnter. Once Java is installed, you can verify it is installed by typing out: ...
How do I verify that I have a working installation of Java and a C runtime prior to installation? 决议 Java Open up a command shell and type the following to see if java is in the PATH: Raw java -version ...
java --version javac --version Verify Java in Ubuntu If the installation was successful, you should see the version of Java you installed displayed in the terminal. Managing Multiple Java Versions in Ubuntu Having multiple versions ofJavainstalled allows you to test and develop applications using ...
5. Verify Java Installation Open a new command prompt to verify that Java has been installed on your computer. Type the below command which will print the version of Java installed on your computer. >java -version The command output.
Verify that the JDK is installed by checking the version ofjavac, the Java compiler: javac-version Copy You’ll see the following output: Output javac11.0.11 Next, let’s look at how to install Oracle’s official JDK and JRE.