None of the other answers were "sticking" for me in RHEL 7, even setting JAVA_HOME and PATH directly in /etc/profile or ~/.bash_profile would not work. Each time I tried to check if JAVA_HOME was set, it would come up blank: Let us discuss 3 standard methods in Windows. User needs to open Command Prompt and enter- ‘java -version’. Open control panel and lookup for Java. Directories method- Click the Menu ‘Start’ and typing About.java or readme file. Taking one by one, showcasing in-depth individually. 2. Setting Classpath from Command Line. There are two ways : Use -classpath or -cp option to provide the classpath locations while starting the Java application or tool. java -cp .;c:/jars demo-application.jar. Use set CLASSPATH command initially, and then run Java application or tool in the same command line window. “. How to Set Java Path to System Environment variable in Windows 11|10 Step 1 – Open Windows 11/10 Environment Setting. Step 2 – Environment Setting. Step 3 – Edit System Environment Variable Path. Step 4 – Set Java Path to System Environment Variable Windows. Step 5 – Restart Windows 10. Restart In the section entitled User Variables, double-click on the entry that says Path. Another window will pop up showing a list of paths. Click the New button and paste the path to your Python executable there. Once that’s inserted, select your newly added path and click the Move Up button until it’s at the top. 2 - Configurando o PATH. Após configurar o JAVA_HOME, devemos configurar o PATH para que as ferramentas de desenvolvimento do JDK estejam disponíveis para uso, para isso vamos colocar a pasta “bin” do JAVA_HOME na variável PATH. Na tela das variáveis de ambiente, procure pela variável PATH, selecione-a e clique em “editar”: If you are using the pre-Windows 10 UI, make sure you have placed the semicolons correctly. There should be exactly one separating every path in the list. There really isn't much else to say here. Simply add the path to PATH and click OK. Set JAVA_HOME. While you're at it, you may as well set JAVA_HOME as well. This is another environment Java 7 and up supports the Path class (in java.nio package). You can use this class to convert a string-path to one that works for your current OS. You can use this class to convert a string-path to one that works for your current OS. .

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