What is the Variables?

package ch01:

// multiple line footnote

/ **

 * What is the variables?

 * variable numbers(variable data)

 * memory space(box) containing the data(value)

 */

public class Variable {

 // start of the main

 public static void main(String[] args) {

  // Three types of using the variables

  // int <-- 

  // 1. Declaring a variable

  int ageBox; // Box containing numbers

  int telBox; // variable named telBox

  // 2. Assign a value to a variable

  ageBox = 30;

  // 3. Use the variable

  System.out.println(ageBox);

  // 4. Update a variable's value

  ageBox = 100;

  System.out.println(ageBox);

  // Conclusion : variable(data), Box able to contain the value(memory space)

 } // end of main

} // end of class