How do I compile and run a program in Java on my Mac

Question

How do I compile and run a program in Java on my mac    I m new   Also I downloaded a program that was suggested to me on here called text wrangler if that has any bearing on the situation

User · Answer

Download and install Eclipse  and you re good to go  http   www eclipse org downloads   Apple provides its own version of Java  so make sure it s up-to-date  http   developer apple com java download     Eclipse is an integrated development environment  It has many features  but the ones that are relevant for you at this stage is     The source code editor   With syntax highlighting  colors and other visual cues Easy cross-referencing to the documentation to facilitate learning  Compiler   Run the code with one click Get notified of errors mistakes as you go    As you gain more experience  you ll start to appreciate the rest of its rich set of features

User · Answer

You need to make sure that a mac compatible version of java exists on your computer   Do java -version from terminal to check that   If not  download the apple jdk from the apple website    Sun doesn t make one for apple themselves  IIRC    From there  follow the same command line instructions from compiling your program that you would use for java on any other platform

User · Answer

Compiling and running a Java application on Mac OSX  or any major operating system  is very easy  Apple includes a fully-functional Java runtime and development environment out-of-the-box with OSX  so all you have to do is write a Java program and use the built-in tools to compile and run it   Writing Your First Program  The first step is writing a simple Java program  Open up a text editor  the built-in TextEdit app works fine   type in the following code  and save the file as  HelloWorld java  in your home directory   public class HelloWorld       public static void main String args              System out println  Hello World               For example  if your username is David  save it as   Users David HelloWorld java   This simple program declares a single class called HelloWorld  with a single method called main  The main method is special in Java  because it is the method the Java runtime will attempt to call when you tell it to execute your program  Think of it as a starting point for your program  The System out println   method will print a line of text to the screen   Hello World   in this example   Using the Compiler  Now that you have written a simple Java program  you need to compile it  Run the Terminal app  which is located in  Applications Utilities Terminal app   Type the following commands into the terminal   cd   javac HelloWorld java   You just compiled your first Java application  albeit a simple one  on OSX  The process of compiling will produce a single file  called  HelloWorld class   This file contains Java byte codes  which are the instructions that the Java Virtual Machine understands   Running Your Program  To run the program  type the following command in the terminal   java HelloWorld   This command will start a Java Virtual Machine and attempt to load the class called HelloWorld  Once it loads that class  it will execute the main method I mentioned earlier  You should see  Hello World   printed in the terminal window  That s all there is to it   As a side note  TextWrangler is just a text editor for OSX and has no bearing on this situation  You can use it as your text editor in this example  but it is certainly not necessary

User · Answer

I will give you steps to writing and compiling code  Use this example    public class Paycheck       public static void main String args              double amountInAccount          amountInAccount   128 57          System out print  You earned              System out print amountInAccount           System out println   at work today                Save the code as Paycheck java Go to terminal and type cd Desktop Type javac Paycheck java Type java Paycheck Enjoy your program

User · Answer

Other solutions are good enough to answer your query  However  if you are looking for just one command to do that for you -   Create a file name  run   in directory where your Java files are  And save this in your file -  javac   1 java  if      -eq 0    then   echo  --------Run output-------    java   1  fi   give this file run permission by running -  chmod 777    Now you can run any of your files by merely running -     run  lt yourfilename gt   don t add  java in filename

[java] How do I compile and run a program in Java on my Mac?

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