To name a class, you simply need an access specifier, sometimes the word "static" or "abstract" (only if applicable), the word "class", and a class name. The body of the class is then contained in brackets. Example:
public class Empty{}
"public" is the access specifier (public is also default, and thus really unnecessary), and "Empty" is the class name. It is common to capitalize the first letter of the class name, as well as the first letter of each word if the name is made of several words concatenated together.
Yes, the base class for all other Java classes is Object.
An Anonymous class in Java is one that does not have a name. It is usually created inside a class
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That's the name used in Java for inheritance. It means that one class has all the behavior of another class; additional functionality can be added to the derived class.
The command to compile a Java program is "javac", followed by the class name (file name).
Some naming conventions/standards for Java classes are: a. A java file must be saved with the name of the public class in the file b. A Java file can have only one public class but can have any number of other classes c. The class names must be in Camel Case. Ex: AnExampleClassForWikiAnswers is how class names should be coded d. Even methods must be in camel case with one difference that the first alphabet must be in lower case. Ex: getSampleDataFrWiki()
Yes, the base class for all other Java classes is Object.
An Anonymous class in Java is one that does not have a name. It is usually created inside a class
Yes you can name a file (class if you use eclipse) java or even have java in the name.
You can run a Java application from the command line using "java <name of the class>"
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It is not compulsory that the java file name and name of the public class should be same. if u will give java file name and public class name different then u have to compile and run the program with another names. for example: u have named class sample i.e. (public class sample) and main function is also defined in this class. and u have saved the file as abc.java then u will first comple the file as: javac abc.java now run the file (type java class name(in which main function is defined) i.e. java sample try it.
The command is "java", followed by the class name. For example, if your compiled class is called myclass.class, you give the command: java myclass
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For run the program
any type
The name of the .java file should exactly match with the name of the public class in the file. Ex: public class Test { ..... } this file should be saved as Test.java