Help with simple applet

Hi,

Yes when I run it, it seems to update the largestInteger box ok, but is always a step behind. eg. first time I run it, say I enter 55, the smallestInteger and largestInteger will update to 0 each. then if i enter 100 and press enter, it will update the largestBox with the previous integer eg.55 instead of the integer I have just entered (100).

Also the smallestBox box will not update - eg if I entered four integers - say 100, 200, 300, 45 - it will always stay at 0 - despite 0 not being entered by the user - the smallest number entered by the user in this case would be 45.

Rory_Ta at 2007-7-10 0:39:32 >

I have modified the code and it works fine

Hopefully this is what you need

The problem was that by default the minimum value was 0 because of which any number you were entering was never displayed on screen

Any ways check if it is clear or you still seems to have some problem

import java.applet.*;

import java.awt.*;

import java.awt.event.*;

public class GUIAppletExercise2 extends Applet implements ActionListener {

// Declare the GUI components globally

Label inputLabel, smallestLabel, largestLabel;

TextField inputBox, smallestBox, largestBox;

// Declare integer variables to hold the number input, the smallest

// number so far, largest number so far and a temp variable to

// be used when comparing and swapping the smallest and largest integers

int numberInteger, smallestInteger, largestInteger, temp;

// Declare variables to hold string versions of the three integer

// variables for placing in the TextFields

String inputString, smallestString, largestString;

boolean flagFirstTime = true;

public void init() {

// Create the labels

inputLabel = new Label("Type in an integer and press ENTER");

smallestLabel = new Label("Smallest number so far");

largestLabel = new Label("Largest number so far");

// Create the TextFields

inputBox = new TextField(12);

smallestBox = new TextField(3);

largestBox = new TextField(12);

// Add the components to the applet window

add(inputLabel);

add(inputBox);

inputBox.addActionListener(this);

add(smallestLabel);

add(smallestBox);

smallestBox.setEditable(false);

add(largestLabel);

add(largestBox);

largestBox.setEditable(false);

} // End of init ()

public void actionPerformed(ActionEvent e) {

try {

// Extract a string from inputBox

inputString = inputBox.getText();

// Convert this string to an integer

numberInteger = Integer.parseInt(inputString);

// Clear the status box

showStatus("");

// Compare the number input by the user and update the smallesBox

// or largestBox if neccessary

if (flagFirstTime) {

largestInteger = numberInteger;

smallestInteger = numberInteger;

flagFirstTime = false;

} else {

if (numberInteger > largestInteger) {

largestInteger = numberInteger;

// largestInteger = temp;

// temp = numberInteger;

} else if (numberInteger < smallestInteger) {

smallestInteger = numberInteger;

// smallestInteger = temp;

// temp = numberInteger;

}

}

// Convert smallestinteger and largestInteger to strings

// and place in smallestBox and largestBox

smallestString = Integer.toString(smallestInteger);

smallestBox.setText(smallestString);

largestString = Integer.toString(largestInteger);

largestBox.setText(largestString);

// Clear the text in InputBox

inputBox.setText("");

} catch (NumberFormatException entry) {

// Display an error message

showStatus("Error: Invalid Input");

// Clear the string in inputBox

inputBox.setText("");

}

} // End of actionPerformed method

} // End of class

amit.naranga at 2007-7-10 0:39:33 >