class is an important element of an oop. class is a user defind data type.
In java FileReader is a class which is meant for reading streams of characters.
I assume you meant Welcome.class, in which case, it would be: java Welcome
"class" files are compiled Java files. Perhaps they are meant to be run with Java. It is possible that the download file has other types of downloads available, but I didn't check this.
Java source files have the .java extension, compiled Java class files have the .class extension.
API stands for Application Programming Interface It usually referrs to documentation on how a specific class works. It lists,describes, and details the class' methods, properties, constructors, etc.. Here is a link for a the API of the String class in Java: http://java.sun.com/j2se/1.5.0/docs/api/java/lang/String.html
interface is just like a class. its contains abstract methods without any implementation and we cant create object for the class. we can only sub classed . used to achieved multiple inheritance in java.
The actions in a java class are called methods.
without class non of the folder can run so the java program should start in class we can use the class without object in java
What i know is java we will use compiler when it want to get class file(file with .class extension) from java file(file with .java extension).
We can't call a class. We always call a method in java.
That's what you get when you don't include any access specifier, such as "public" or "private". This default access gives access to any class in the same package.
Class