/* * Class: CSC-123 * * Project 1 part 1: Methods of String class * * Student: * */ import java.lang.*; import javax.swing.*; import java.awt.*; import java.util.*; public class Project1Part1 { public static void createAndShowGUI() { Object[] possibleValues = { "1: charAt & concat", "2: Equals To ?", "3: Equals To and Ignores Case", "4: Format Output - Date", "5: Tell Integer Length", "6: Boolean Matches", "7: Set Substring Length - Select Start", "8: Set Substring - From Start - End", "9: Change Input to all LowerCase", "10: Change Input to all UpperCase", "11: Trim and Clean Out White Space" }; Object selectedValue = JOptionPane.showInputDialog(null, "Choose one", "Input", JOptionPane.INFORMATION_MESSAGE, null, possibleValues, possibleValues[0]); if (selectedValue == "1: charAt & concat") { doCharAt(); } else if(selectedValue == "2: Equals To ?") { doEqualsTo(); } else if(selectedValue == "3: Equals To and Ignores Case") { doEqualsIgnoreCase(); } else if(selectedValue == "4: Format Output - Date") { doFormat(); } else if(selectedValue == "5: Tell Integer Length") { doLength(); } else if(selectedValue == "6: Boolean Matches") { doBooleanMatches(); } else if(selectedValue == "7: Set Substring Length - Select Start") { doStartChar(); } else if(selectedValue == "8: Set Substring - From Start - End") { doStartEnd(); } else if(selectedValue == "9: Change Input to all LowerCase") { doConvertToLower(); } else if(selectedValue == "10: Change Input to all UpperCase") { doConvertToUpper(); } else if(selectedValue == "11: Trim and Clean Out White Space") { doTrim(); } } public static void doCharAt() //Doing charAt and concat { char bob; String bill = input("Please enter a long string for some concatting and charAtting"); //accept input from user;; String sval = input("Please input an INTEGER for charAt, remember count starts at 0"); //accept input from user; int count = Integer.parseInt(sval); bob = bill.charAt(count); String sue = " Sue"; String tom = " "; JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Lets create an empty string for tom"); System.out.println("Lets create an empty string for tom"); tom = bill.concat(sue); JOptionPane.showMessageDialog(myWindow, "Lets set string for bill, it is: " + bill); System.out.println("Lets set string for bill, it is: " + bill); JOptionPane.showMessageDialog(myWindow, "Lets charAt(count) bill and the result is: " + bob); System.out.println("Lets charAt(count) bill and the result is: " + bob); JOptionPane.showMessageDialog(myWindow, "Lets create string sue = Sue"); System.out.println("Lets create string sue = Sue"); JOptionPane.showMessageDialog(myWindow, "Lets make tom = bill.concat(sue), tom's value now is: " + tom); System.out.println("Lets make tom = bill.concat(sue), tom's value now is: " + tom); myWindow.setTitle("Tom's value is " + tom); createAndShowGUI(); } public static void doEqualsTo() //Doing equal to, boolean, case sensitive { boolean hill; String inputValueEqualsTo1 = input("Please input case sensitive value for comparison"); //accept input from user String inputValueEqualsTo2 = input("Please input another case sensitive value for comparison"); //accept input from user String hay = inputValueEqualsTo1; String hoe = inputValueEqualsTo2; hill = hay.equals(hoe); JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Are both inputs equal? " + hill); JOptionPane.showMessageDialog(myWindow, "Line in question: hill = hay.equals(hoe)"); System.out.println("Are both inputs equal? " + hill); System.out.println("Line in question: hill = hay.equals(hoe)"); createAndShowGUI(); } public static void doEqualsIgnoreCase() //Doing equal to, boolean, case insensitive { boolean joe; String inputValueEqualsTo3 = input("Please input value for comparison"); //accept input from user String inputValueEqualsTo4 = input("Please input another value for comparison"); //accept input from user String zill = inputValueEqualsTo3; String jill = inputValueEqualsTo4; joe = zill.equalsIgnoreCase(jill); JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Are both inputs equal(case insensitive)? " + joe); JOptionPane.showMessageDialog(myWindow, "Line in question: joe = zill.equalsIgnoreCase(jill)"); System.out.println("Are both inputs equal(case insensitive)? " + joe); System.out.println("joe = zill.equalsIgnoreCase(jill)"); createAndShowGUI(); } public static void doFormat() //Doing format, using regular expressions { Calendar rightNow = Calendar.getInstance(); String dateTime = String.format("The Date is: %1$tm/%1$te/%1$tY", rightNow); JFrame myWindow; myWindow = new JFrame(); System.out.println("Lets see the date before the String.format: " + rightNow); JOptionPane.showMessageDialog(myWindow, "Lets show the current date in MM/DD/YYYY format: " + dateTime); JOptionPane.showMessageDialog(myWindow, "Line in question: String.format(%1$tm/%1$te/%1$tY, rightNow)"); System.out.println(dateTime); System.out.println("Line in question: String.format(%1$tm/%1$te/%1$tY, rightNow)"); createAndShowGUI(); } public static void doLength() //Doing length of string { int size; String sb = input("Please input string for length calculation"); //accept input from user size = sb.length(); JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Length of String: " + size); JOptionPane.showMessageDialog(myWindow, "Line in question: size = sb.length()"); System.out.println ("Length of String " + size); System.out.println ("Line in question: size = sb.length()"); createAndShowGUI(); } public static void doBooleanMatches() //Doing boolean matches with Regular Expressions { boolean flag; String zoe = input("Please enter your telephone number (XXX-XXX-XXXX)"); //accept input from user flag = zoe.matches("[0-9]{3}-[0-9]{3}-[0-9]{4}"); JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Correct Format ?: " + flag); JOptionPane.showMessageDialog(myWindow, "Line in question: flag = zoe.matches(\"[0-9]{3}-[0-9]{3}-[0-9]{4}\")"); System.out.println("Correct Format ?: " + flag); System.out.println("Line in question: flag = zoe.matches(\"[0-9]{3}-[0-9]{3}-[0-9]{4}\")"); createAndShowGUI(); } public static void doStartChar() //Doing start from character number in string { String result; String stChange = input("Please input String for substring start at 2"); //accept input from user result = stChange.substring(2); JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Result from substring start at 2: " + result); JOptionPane.showMessageDialog(myWindow, "Line in question: result = stChange.substring(2)"); System.out.println("Result from substring start at 2: " + result); System.out.println("Line in question: result = stChange.substring(2)"); createAndShowGUI(); } public static void doStartEnd() //Doing start and end from character string { String startend; String stChangeStEnd = input("Please input string for substring start at 2 and ending at 35"); startend = stChangeStEnd.substring(2, 35); JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Result from substring start at 2 & ending at 35: " + startend); JOptionPane.showMessageDialog(myWindow, "Line in question: startend = stChangeStEnd.substring(2, 35)"); System.out.println("Result from substring start at 2 & ending at 35: " + startend); System.out.println("Line in question: startend = stChangeStEnd.substring(2, 35)"); createAndShowGUI(); } public static void doConvertToLower() //Doing convert to lowercase { String convertlower; String lowerCase = input("Please input a uppercase string"); convertlower = lowerCase.toLowerCase(); JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Result from convert to lowercase: " + convertlower ); JOptionPane.showMessageDialog(myWindow, "Line in question: convertlower = lowerCase.toLowerCase()"); System.out.println("Result from convert to lowercase: " + convertlower); System.out.println("Line in question: convertlower = lowerCase.toLowerCase()"); createAndShowGUI(); } public static void doConvertToUpper() //Doing convert to uppercase { String convertupper; String upperCase = input("Please input a lowercase string"); convertupper = upperCase.toUpperCase(); JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Result from convert to uppercase: " + convertupper ); JOptionPane.showMessageDialog(myWindow, "Line in question: convertupper = upperCase.toUpperCase()"); System.out.println("Result from convert to uppercase: " + convertupper ); System.out.println("Line in question: convertupper = upperCase.toUpperCase()"); createAndShowGUI(); } public static void doTrim() //Doing trim which cleans spaces and tabs { String clean; String spacedOut = input("Please input sentence starting with many spaces"); clean = spacedOut.trim(); JFrame myWindow; myWindow = new JFrame(); JOptionPane.showMessageDialog(myWindow, "Result from trim: " + clean ); JOptionPane.showMessageDialog(myWindow, "Line in question: clean = spacedOut.trim()"); System.out.println("Result from trim: " + clean ); System.out.println("Line in question: clean = spacedOut.trim()"); createAndShowGUI(); } public static String input(String text) { return JOptionPane.showInputDialog(text); } public static void main(String[] args) //Main running portion { //Schedule a job for the event-dispatching thread: //creating and showing this application's GUI. javax.swing.SwingUtilities.invokeLater(new Runnable() { public void run() { createAndShowGUI(); } }); } }