Activity 1: Numbers

I. Problem
Create an application that will input a start value and end value. The application will start value all the members from the start to end value and all the odd and even.

II. Analysis
Input Variable Data Type Description SV Integer Starting Value EV Integer End Value

Output Variable NOS Integer Numbers OD Integer Odd numbers EV Integer Even numbers

III. Output Layout

IV. Codes import java.util.Scanner; public class EvenOdd
{
public static void main (String[]args) { int a; int b; Scanner in = new Scanner (System.in); System.out.print ("Starting Value: "); a=in.nextInt(); System.out.print ("End Value: "); b=in.nextInt(); System.out.println("number\t"+"odd\t"+"even\t");

for(int i=a; i<=b;i++) { System.out.print(i); if(i%2==0) { System.out.println("\t\t"+i );//even } else { System.out.println("\t"+i); //odd } } }
}
Activity 2: Transaction I. Problem
Create an application that will transact the following item codes with looping and will print a receipt.

II. Analysis
Input Variable Data Type Description
A Integer Letter A Price
B Integer Letter B Price
C Integer Letter C Price
D Integer Letter D Price
E Integer Letter E Price q Integer Quantity tno Integer Transaction Number ic String Item Code ap Integer Amount Paid

Output Variable ipriceA Integer Total Amount in A ipriceB Integer Total Amount in B ipriceC Integer Total Amount in C ipriceD Integer Total Amount in D ipriceE Integer Total Amount in E
3
vat Integer 12% Vat c Integer Change

Code Description Item Price A 2g 200 B 4g 500 C 8g 800 D 16g 1200 E 32g 2000

III. Output Layout

IV. Codes import java.util.*; public class Transaction
{
static Scanner console = new Scanner(System.in); public static void main(String[] args) { int pa ,pb , pc, pd, pe, tno, q, ap, C; int a, b, c, d, e ; String ic; a = 200; b = 500; c = 800; d = 1200; e = 2000; tno = 1001; System.out.println("Code Description Item Price"); System.out.println("A 2g 200"); System.out.println("B 4g 500"); System.out.println("C 8g 800"); System.out.println("D 16g 1200"); System.out.println("E 32g 2000"); System.out.println("Transaction No. " + tno); System.out.print("Item Code: "); ic = console.next();

if (ic.equals("a")||ic.equals("A")) { System.out.print("Quantity: "); q = console.nextInt(); pa = (a * q);

System.out.println("Transaction: " + tno); System.out.println("No. of Items Purchased: " + q); System.out.println("Total Amount Purchased: " + pa); System.out.println("Vat 12%: " + (pa * .12)); System.out.print("Amount Paid: " ); ap = console.nextInt(); c = ap - pa; System.out.println("Change: " + c); System.out.print("Item Code: "); ic = console.next(); } if(ic.equals ("b")||ic.equals ("B")); { System.out.print("Quantity: "); q = console.nextInt(); pb = (b * q); System.out.println("Item Price: " + 500); System.out.println("Total Amount: " + pb); System.out.println("Transaction: " + tno); System.out.println("No. of Items Purchased: " + q); System.out.println("Total Amount Purchased: " + pb); System.out.println("Vat 12%: " + (pb * .12)); System.out.print("Amount Paid: " ); ap = console.nextInt(); c = ap - pb; System.out.println("Change: " + c); System.out.print("Item Code: "); ic = console.next(); } if (ic.equals ("c")||ic.equals ("C")); { System.out.print("Quantity: "); q = console.nextInt(); pc = (c * q); System.out.println("Item Price: " + 800); System.out.println("Total Amount: " + pc); System.out.println("Transaction: " + tno); System.out.println("No. of Items Purchased: " + q); System.out.println("Total Amount Purchased: " + pc); System.out.println("Vat 12%: " + (pc * .12)); System.out.print("Amount Paid: " ); ap = console.nextInt(); c = ap - pc; System.out.println("Change: " + c); System.out.print("Item Code: "); ic = console.next(); } if (ic.equals ("d")||ic.equals ("D")); { System.out.print("Quantity: "); q = console.nextInt(); pd = (d * q); System.out.println("Item Price: " + 1200); System.out.println("Total Amount: " + pd); System.out.println("Transaction: " + tno); System.out.println("No. of Items Purchased: " + q); System.out.println("Total Amount Purchased: " + pd); System.out.println("Vat 12%: " + (pd * .12)); System.out.print("Amount Paid: " ); ap = console.nextInt(); c= ap - pd; System.out.println("Change: " + c); System.out.print("Item Code: "); ic = console.next(); } if (ic.equals ("e")||ic.equals ("E")); { System.out.print("Quantity: "); q = console.nextInt(); pe = (e * q); System.out.println("Item Price: " + 2000); System.out.println("Total Amount: " + pe); System.out.println("Transaction: " + tno); System.out.println("No. of Items Purchased: " + q); System.out.println("Total Amount Purchased: " + pe); System.out.println("Vat 12%: " + (pe * .12)); System.out.print("Amount Paid: " ); ap = console.nextInt(); c = ap - pe; System.out.println("Change: " + c); System.out.print("Item Code: "); ic = console.next(); } }
}

Activity 3: String Compare I. Problem
Make software that can be equal with the same string to another string. II. Analysis
Input Variable Data Type Description anotherName String Enter the name

Output Variable aName String As Princess III. Output Layout

IV. Codes

import java.util.Scanner; class StringCompare
{
public static void main(String[] args) { String aName = "Princess"; String anotherName; Scanner input = new Scanner(System.in); System.out.print("Enter your name: "); anotherName = input.nextLine(); if(aName.equals(anotherName)) System.out.println(aName + " = " + anotherName); else System.out.println(aName + " does not equal " + anotherName); }
}
Activity 4: Test Character I. Problem
Make a program that will input a text then it will define if it is uppercase and lowercase after that the text input will be uppercase and it can be lowercase and it define if it is a digit or a letter. II. Analysis
Input Variable Data Type Description aString String Text will input

Output Variable aChar Character Counts the number of character III. Output Layout

IV. Codes import java.util.Scanner; class TestCharacter
{
public static void main(String[] args) { char aChar; String aString; Scanner keyboard = new Scanner(System.in); System.out.print("Enter a character: "); aString = keyboard.nextLine(); aChar = aString.charAt(0); System.out.println("The character is: " + aChar); if(Character.isUpperCase(aChar)) System.out.println(aChar + " is uppercase."); else System.out.println(aChar + " is not uppercase."); if(Character.isLowerCase(aChar)) System.out.println(aChar + " is lowercase."); else System.out.println(aChar + " is not lowercase."); aChar = Character.toLowerCase(aChar); System.out.println("Lowercase = " + aChar); aChar = Character.toUpperCase(aChar);
System.out.println("Uppercase = " + aChar); if(Character.isLetterOrDigit(aChar)) System.out.println(aChar + " is a letter or digit."); else System.out.println(aChar + " is neither a letter nor digit."); if(Character.isWhitespace(aChar)) System.out.println(aChar + " is whitespace."); else System.out.println(aChar + " is not whitespace."); }
}
Activity 5: Word I. Problem
Make a program that will find a letter and replace it. II. Analysis
Input Variable Data Type Description w1 String Word 1 w2 String Word 2 w3 String Word 3 w4 String Word 4 w5 String Word 5

Output Variable word1 String Replace word 1 word2 String Replace word 2 word3 String Replace word 3 word4 String Replace word 4 word5 String Replace word 5

III. Output Layout

IV. Codes

import javax.swing.JOptionPane; public class Word
{
public static void main (String[]args) { String w1 = JOptionPane.showInputDialog("Word 1: "); String w2 = JOptionPane.showInputDialog("Word 2: "); String w3 = JOptionPane.showInputDialog("Word 3: "); String w4 = JOptionPane.showInputDialog("Word 4: "); String w5 = JOptionPane.showInputDialog("Word 5: "); String find = JOptionPane.showInputDialog("Find Letter: "); String replace = JOptionPane.showInputDialog("Replace Letter: "); String word1, word2, word3, word4, word5; word1 = w1.replace(find,replace); word2 = w2.replace(find,replace); word3 = w3.replace(find,replace); word4 = w4.replace(find,replace); word5 = w5.replace(find,replace); JOptionPane.showMessageDialog(null, "Words Existing New Word\n 1 "+ w1 +" "+ word1 +"\n 2 "+ w2 +" "+ word2 +"\n 3 "+ w3 +" "+ word3 +"\n 4 "+ w4 +" "+ word4 +"\n 5 "+ w5 +" "+word5); }
}

Activity 6: Sentence I. Problem
Make a program that will identify the number of spaces, vowels, consonants, characters and number of words. II. Analysis
Input Variable Data Type Description
S String String input

Output Variable c Integer Number of Spaces c Integer Number of Vowels co Integer Number of Consonants ln1 Integer Number of Characters sp Integer Number of Words