What name is the same as the class name in Java?
Yes, it is allowed to define a method with the same name as that of a class. No compile time or run time error will occur. But this is not recommended by Java coding standards. Normally, the constructor name and the class name are always the same in Java.
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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 must be named “classname”.
What is the java filename?
Java software uses the following file suffixes: File type. Suffix. Java source. .Java.
Do file name and class name have to be the same in Java?
In Java, the name of the java file must always be the same as the name of a public class. When writing a java program first, it is saved as a “. java”, when compiled it forms a byte code which is a “.
Can a constructor have a different name than the class?
The constructor name must be the same as the class name, and if you provide more than one constructor, the arguments to each constructor must differ in number or type from the others. Does not specify a return value for a constructor.
Can there be 2 public classes in Java?
No, when defining multiple classes in a single Java file, you must ensure that only one class among them is public. If you have more than one public class in a single file, a compile-time error will be generated.
Can a Java file have 2 classes?
Yes ! . The java file can only contain one public class. If you want these two classes to be public, they must be split into two.
Can we save the Java file without any name?
What do you mean that without any name there has to be some name? Yes, it is possible to compile a Java source file with a different filename, but you must ensure that none of the classes defined inside are public… Class files are created for the classes inside the source file.
What if file name and class name are different in Java?
It is a compile error if the names of the public class and the file that contains it are different. A class that is not declared public can be saved to a file with a different name. Note that the generated class files are named after the Java classes, not the file names. Look at the following examples.
Why are the file names the same as the public class name?
To be more specific, the file name must have the same name as the name of the public class in that file, which is how you tell the JVM that this is the entry point for you. Actually the entry point is specified in the jar manifest.
Can a class be maintained with a different name?
A class that is not declared public can be saved to a file with a different name. Note that the generated class files are named after the Java classes, not the file names. Look at the following examples. In the following illustrations, X is any valid name (except Foo and Bar).
Can a class be executed inside a .java file?
The class (which should execute main) within the .java file must have the same name as the file. If the class is not public (as in your case), the class will be compiled but cannot be executed as Eclipse tries to load the class according to the file name. This is true if the class is public, you can put numerous non-public classes in a .java file.