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At the moment I am looking for another way to run my Java program from command line, other than adding it to a JAR file. My program has the following number of classes:
The name of the program file - MyProgram
Main class - Server1
second class - Client Handler
Package name - Items
3rd class - User1
4th class - User2
The main class and client handler alongside the package will have to run first in order for user 1 & user 2 to run, because they are client classes and are dependent on the main class.
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It is time to create our main method. Go back to the drop down menu called "new" and, once again, pick "Class." This time, check the box that says "public static void main(String[]args)." This indicates to Eclipse that you want to create a main method. Give your main class a name and click finish.
Type 'javac MyFirstJavaProgram. java' and press enter to compile your code. If there are no errors in your code, the command prompt will take you to the next line (Assumption: The path variable is set). Now, type ' java MyFirstJavaProgram ' to run your program.
We must follow the steps given below to run a Java program. Open the notepad and write a Java program into it. Save the Java program by using the class name followed by .java extension. Open the CMD, type the commands and run the Java program. Let's create a Java program and run it using the Command Prompt.
Using multiple classes in a Java program. A Java program can contain any number of classes. Following Java program comprises of two classes: Computer and Laptop. Both classes have their constructors and a method. In the main method, we create objects of two classes and call their methods. class Computer {. Computer() {.
javac *.java // compliles all java files in the dir java MyClass // runs the particular file If one class is dependent on another class that hasn't been compiled yet, the program won't run. So you should compile all files before trying to run the program dependent on other files. My three hours were wasted before I chanced upon the above.
The main class and client handler alongside the package will have to run first in order for user 1 & user 2 to run, because they are client classes and are dependent on the main class. Run java classname.
javac *.java // compliles all java files in the dir
java MyClass // runs the particular file
If one class is dependent on another class that hasn't been compiled yet, the program won't run. So you should compile all files before trying to run the program dependent on other files.
If your files are packaged, then something like this
javac com.mypackage/.*java
java com.mypackage.MyClass
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