Demo.java

//ek hi class public ho skti h
//static=call krane ke liye
//out=variables
//camel case=two types:upper(Format'StudentData')every word of first letter must be capital,iska naam hum sirf class or interface ko hi dete h
//lower camle case(Format 'studentDataInfo')pehla letter small only,bakiyon ka capital hoga,can identify through variables or functions().
public class Demo
{
public static void main(String args[])
{
System.out.println("Hello World");
}
}