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In order to conveniently use the tools in the JDK in the console window, you need to add the path where the JDK binary (bin) file is located in the Windows system environment variable PATH, execute the following command in the console window to update the PATH environment variable.
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'javac' is not an internal or external command, nor is it a running program or batch file. Run the "Command Control Character" program and execute the following commands: Run the installer and follow the on-screen instructions to complete the installation of JDK 6.
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