You can go into the directory where you have kept your source code either by following the typical GUI way or from the terminal using the cd command as well. Before running our Java code, we need to compile it first. To compile a Java code/program, we get the class file. Then we need to execute/run the class file.
How do I learn Java?
Get started with Java. Official Java tutorial - Java documentation is one of the best programming language documentation. Visit the official Java tutorial. Write a lot of Java code - The only way you can learn programming is by writing a lot of code. What is Java?
What are the output commands in Java?
Java has several output commands. These include: void indicates that no data is to be passed and the corresponding location is left empty instead. args is used to pass values in the form of an array from the command line to the Java main method. string defines a string in Java. With this command you have a text output via the console.
Do you need to know Java commands before writing a program?
You will need to know the basic Java commands at the beginning when you want to start writing your own program. Additionally, these Java commands also help you in your daily work on your program after it has gone through its teething troubles, and are therefore important to look at first.
How to Run Java Code in The Terminal
The process I am going to show you in this article is applicable to any operating system whether that is Windows, MacOS, or Linux. I will be using the following Java code in the next step.
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???? Step 1 – Go to The Directory Where Your Source Code Is
If you have already written your Java code in an editor, then simply go into that directory. You can go straight into the directory through your file manager if you want.
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????????How to Compile The Java Code
Before running our Java code, we need to compile it first. To compile a Java code/program, we get the class file. Then we need to execute/run the class file.
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????️ How to Run The Java Code
We run the .class file to execute the Java programs. For that, we use the command java class_file_name_without_the_extension. Like, as our .class file for this is Main.class, our command will be java Main. The Java program has been executed successfully The exact same procedure is also applicable for the other operating systems as well.
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????Bonus: How to Run A Java Program with Packages
A package basically means a folder. Earlier, I showed you how to use any regular Java code using the terminal. There, I did not use any packages inside the Java code. Now I will show you how you can run any Java code that has packages declared within it. This time, I will be using the following Java code. In the first line, I have written the packa
????♂️ Conclusion
I hope this article helps you run your Java programs just using the terminal. ➡️ If you want to know how to install a Java compiler for your Windows operating system, then you can check out this article. ➡️ If you want to know how to install C and C++ compilers for your Windows operating system, then you can check out this article. ➡️ If you want t
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