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Create a directory to keep your works, e.g., " d:\myProject" or " c:\myProject".Java HotSpot(TM) 64-Bit Server VM (build 17.0.1+12-LTS-39, mixed mode, sharing) Java(TM) SE Runtime Environment (build 17.0.1+12-LTS-39) Display the JDK version javac -version javac 17.0.1 // Display the JRE version java -version java version " 17.0.1" LTS Issue the following commands to verify that JDK/JRE are properly installed and display their version:.Under "Java SE Development Kit 17.0.\bin other entries.Goto "Control Panel" ⇒ (optional) "Programs" ⇒ "Programs and Features" ⇒ Un-install ALL programs begin with "Java", such as "Java SE Development Kit. If you have previously installed older version(s) of JDK/JRE, un-install ALL of them.
#Java 7 download windows 8.1 install
Although you can install multiple versions of JDK/JRE concurrently, it is messy. I recommend that you install only the latest JDK.
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How To Install JDK on Windows Step 0: Un-Install Older Version(s) of JDK/JRE Since you are supposed to write Java Programs instead of merely running Java programs, you should install JDK, which includes JRE.
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JDK (Java Development Kit), which includes JRE plus the development tools (such as compiler and debugger), is need for writing as well as running Java programs. JRE (Java Runtime), which include a Java Virtual Machine and core libraries, is needed for running Java programs. Java SE 13 (19.9) (JDK 13) (September 2019): Switch Expression (preview), Multi-line Text Block (preview).
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OracleJDK is no longer free for commercial use, but OpenJDK is still free. Clean up the JDK and the installation package (removed JavaFX, JavaEE, CORBA modules, deprecated Nashorn JavaScript engine).
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Introduced Strings in switch statement, Binary integer literals, allowing underscores in numeric literals, improved type inference for generic instance creation (or diamond operator ), Catching multiple exception types and rethrowing exceptions with improved type checking.
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