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Ai đó giúp e với suy nghĩ 3,4 tiếng r huhu
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Bị giữ lại ở chỗ này
First Java Program
Let us look at a simple code that will print the words Hello World.
Example
Live Demo
public class MyFirstJavaProgram {
/* This is my first java program.
* This will print 'Hello World' as the output
*/
public static void main(String []args) {
System.out.println("Hello World"); // prints Hello World
}
}
Let's look at how to save the file, compile, and run the program. Please follow the subsequent steps −
- Open notepad and add the code as above.
- Save the file as: MyFirstJavaProgram.java.
- Open a command prompt window and go to the directory where you saved the class. Assume it's C:\.
- 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.
- You will be able to see ' Hello World ' printed on the window.
