You need to open a new file ⇒ choose 'Format' ⇒ 'Make Plain Text' ⇒ Enter the source code ⇒ Save as ' Hello.java '. (If you use Mac OS X's default text editor 'TextEdit' (NOT recommended),

Use a programming text editor (such as Sublime Text or Atom) to input the following source code and save as ' Hello.java ' under the directory ' ~/myProject '.

Hence, this new directory can be referenced as ' ~/myProject '. In Mac OS X, the home directory of the current user canīe referenced as ' ~ '.

Create a directory called ' myProject ' under your home directory (Launch 'Finder' ⇒ 'Go' ⇒ 'Home' Select 'File' ⇒ 'New Folder' ⇒ ' myProject ').

Display the location of Java Runtime which java Display the location of Java Compiler which javac Display the JDK version javac -version

To verify your installation, open a 'Terminal' and issue these commands. Nowadays there are many JRE packages available from a variety of projects and companies, but the two most popular on Ubuntu are OpenJDK and Oracle HotSpot.

Follow the screen instructions to install JDK/JRE.

Double-click the downloaded Disk Image (DMG) file.

Under 'Java Platform, Standard Edition' ⇒ 'Java SE 11.0. Select macOS and 圆4 and download the JDK (about 190 MB), which will put the OpenJDK11U-jdk圆4machotspot11.0.911.pkg file into your /Downloads folder Clicking on the pkg file will install into this location: /Library/Java/JavaVirtualMachines/adoptopenjdk-11.jdk Almost done.

Then, proceed to 'Step 3: Write a Hello-world Java program'.

If message 'To open javac, you need a Java runtime' appears, select 'Install' and follow the instructions to install JDK.

If message 'command not found' appears, JDK is NOT installed.If the JDK version is prior to 1.8, proceed to Step 2 to install the latest JDK otherwise, proceed to 'Step 3: Write a Hello-world Java If a JDK version number is returned (e.g., JDK x.x.x ), then JDK has already been installed.To check if JDK has been installed, open a 'Terminal' (Search 'Terminal' or Finder ⇒ Go ⇒ Utilities ⇒ Terminal) and issue this command: javas - version Step 1: Check if JDK has been Pre-Installed

Java 1.8 download mac