Program Explanation Program: // Importing the class. import java.time.format.DateTimeFormatter; // Importing the class. import java.time.LocalDateTime; // Importing the class. import java.util.StringTokenizer; // Importing the class. import java.util.Scanner; // CalAge.java class. class CalAge { // Declaring the variable of type Scanner.java. Scanner sc; // Declaring the variable of type String. String DOB; // Declaring the variables of type int. int current_date, current_year; // Declaring the variables of type int. int current_month_num; // Declaring the variables of type int. int user_date; // Declaring the variables of type String. String user_month; // Declaring the variables of type int. int user_month_num; // Declaring the variables of type int. int user_year11; // Creating array of string. String[] month_ar={"January", "February", "March", "April", "May", "June", "July", "August", "September", "October", "November", "December"}; // Creating array of int. int[] date_of_month={31,28,30,31,30,31,30,31,30,31,30,31}; // Defining the function to be called automatically. public static void main(String[] args) { // Creating class object. CalAge ob=new CalAge(); // Creating class object. DateTimeFormatter dtf = DateTimeFormatter.ofPattern("dd/MM/yyyy"); // Calling the method and assigning the value. LocalDateTime now = LocalDateTime.now(); // Calling the method and assigning the value. String s=(dtf.format(now)).toString(); // Creating class object. StringTokenizer st=new StringTokenizer(s); // Using the method from Integer class to convert string to int and invoking the method. int current_date=Integer.parseInt(st.nextToken("/")); // Using the method from Integer class to convert string to int and invoking the method. int current_month_num=Integer.parseInt(st.nextToken("/")); // Using the method from Integer class to convert string to int and invoking the method. int current_year=Integer.parseInt(st.nextToken("/")); // Invoking the method. ob.setDateOfBirth(current_date, current_month_num, current_year); // Invoking the method. System.out.println("Age in years and months: " + ob.calculateAge() + " years."); } // Defining the method. public void setDateOfBirth(int current_date, int current_month_num, int current_year){ // Value assigning this.current_date=current_date; // Value assigning this.current_month_num=current_month_num; // Value assigning this.current_year=current_year; // Creating the class object. sc=new Scanner(System.in); // Declaring as well as initializing the boolean value to the variable. boolean b=true; // Using the loop. while(b){ // Displaying the message on screen. System.out.println("Enter DOB in (date month year) format: "); // Invoking the method. DOB=sc...

6th Edition

ISBN: 9780134041674

Author: Walter Savitch, Kenrick Mock

Publisher: PEARSON

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Question

Chapter 4, Problem 2PP

Program Plan Intro

To write a code to calculate the personâ€™s age.

Program Plan:

Write a code that will be used to determine the personâ€™s age by using current date and birth date.

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Chapter 4, Problem 1PP

Chapter 4, Problem 3PP

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Chapter 4 Solutions

Absolute Java (6th Edition)

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Knowledge Booster

To write a code to calculate the personâ€™s age . Program Plan: Write a code that will be used to determine the personâ€™s age by using current date and birth date.

Solution Summary: The author explains how to write a code to calculate the person's age by subtracting the date of birth from the current date.

To write a code to calculate the personâ€™s age.

Program Plan:

Write a code that will be used to determine the personâ€™s age by using current date and birth date.

Want to see the full answer?

Chapter 4 Solutions

To write a code to calculate the personâ€™s age . Program Plan: Write a code that will be used to determine the personâ€™s age by using current date and birth date.

Solution Summary: The author explains how to write a code to calculate the person's age by subtracting the date of birth from the current date.

To write a code to calculate the personâ€™s age. Program Plan: Write a code that will be used to determine the personâ€™s age by using current date and birth date.

Want to see the full answer?

Chapter 4 Solutions

To write a code to calculate the personâ€™s age.

Program Plan:

Write a code that will be used to determine the personâ€™s age by using current date and birth date.