Can I compile a Java file with a different name than the class?
yes, we compile a java file with a different name than the class, provided that there should not be any public class in that file. If there is any public class in file then in that case you have to give that name as file name. But if your class does not contain any public class then you can give any name to you class.
Is the java source file name and class name must be same?
The filename must have the same name as the public class name in that file, which is the way to tell the JVM that this is an entry point. In this condition, we will not able to easily identify which class need to interpret by java interpreter and which class containing Entry point for the program.
When must the main class and the file name coincide?
113) When must the main class and the file name coincide? Ans :When class is declared public.
What is the connection between the file name and the class name?
class files have the same name as the class names. Having the same name as class name is how the JVM will know which class to load and where to look for entry point (main method).
Which command is used to compile Java program?
javac command
The javac command reads source files that contain module, package and type declarations written in the Java programming language, and compiles them into class files that run on the Java Virtual Machine. The javac command can also process annotations in Java source files and classes.
How do you compile a Java program?
How to compile a java program
- Open a command prompt window and go to the directory where you saved the java program. Assume it’s C:\.
- Type ‘javac MyFirstJavaProgram. java’ and press enter to compile your code.
Does a Java file need a public class?
java file without a public class. Okay, so a java source file must have at least one public class and the file should be called “class-name.
Can you save a Java file without name?
what do you mean by without any name there need to be some name. Yes,it is possible to compile a java source file with different file name but you need to make sure none of the classes defined inside are public… when you compile the source file the corresponding .
Which name is same as class name?
Every class object is created using the same new keyword, so it must have information about the class to which it must create an object. For this reason, the constructor name should be the same as the class name.
Can I have main method for every class in Java?
can we have more than one main method in a java program? Ans: Yes. We can have different classes having the main methods.
How do you compile a class in Java?
How do you compile and run a Java program?
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.
Can we compile a java file with a different name than class?
yes, we can compile a java file with a different name than the class, provided that there should not be any public class in that file. If there is any public class in file then in that case you have to give that name as file name.
Can I change the name of a javac file?
No. You could write a shell script to rename the .java file before compiling it, but javac requires that filenames = class names. yes, you can choose any name for the file (.java). there is no matter to what are the name of classes in that file means that class names may be totaly different from the file name.
Is it possible to run a class from a file name?
This can be done. The main reason for the class and file name to be same are to make the job of the complier easy to check which class it needs to run, in the whole list of the Java classes. So it’s a good practice to have filename and class name as same.
Should your java file name reflect the class defined within it?
Your Java file name should always reflect the public class defined within that file. Otherwise, you will get a compiler error. For example, test.java: public class Foo {}