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Part 1 - Java introduction for beginners
Part 2 - Java basics for beginners
Our "Hello World!" program consists of three primary components:
Comments are ignored by the compiler but are useful to other programmers.
/* MultiLine Comments */
/** Java Documentation Comments */
// Single Line Comments
Note : The compiler ignores everything from // to the end of the line.
(追記) (追記ここまで)
Understanding Hello World
public : is an access modifier that means it will be accessed by every class out there
void : is a return type i.e it does not return any value
main() : is a method or a function name.
Program
/*
This is a multi
line comment
*/
// Single Line Comment
Compilation
$ javac Program.java
Execution
$ java Program
java tutorial for beginners
Part 1 - Java introduction for beginners
Part 2 - Java basics for beginners
Our "Hello World!" program consists of three primary components:
- Source Code
- Comments
- Class definition
- Main method
Comments are ignored by the compiler but are useful to other programmers.
/* MultiLine Comments */
/** Java Documentation Comments */
// Single Line Comments
Note : The compiler ignores everything from // to the end of the line.
(追記) (追記ここまで)
Understanding Hello World
public : is an access modifier that means it will be accessed by every class out there
void : is a return type i.e it does not return any value
main() : is a method or a function name.
Program
/*
This is a multi
line comment
*/
// Single Line Comment
publicclassProgram
{
publicstaticvoid main(String[] args)
{
System.out.println("Hello World");
}
}
Compilation
$ javac Program.java
Execution
$ java Program
java tutorial for beginners
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