/*
* IntegerSumsView.java
* This is a program that allows an individual to add a list of numbers, and choose whether
* they add all numbers, or only even or odd numbers
*/
public class IntegerSumsView extends FrameView {
//
int position = 0;
int[] aryInteger = new int[10];
public IntegerSumsView(SingleFrameApplication app) {
super(app);
initComponents();
// status bar initialization - message timeout, idle icon and busy animation, etc
ResourceMap resourceMap = getResourceMap();
int messageTimeout = resourceMap.getInteger("StatusBar.messageTimeout");
messageTimer = new Timer(messageTimeout, new ActionListener() {
public void actionPerformed(ActionEvent e) {
statusMessageLabel.setText("");
}
});
messageTimer.setRepeats(false);
int busyAnimationRate = resourceMap.getInteger("StatusBar.busyAnimationRate");
for (int i = 0; i < busyIcons.length; i++) {
busyIcons[i] = resourceMap.getIcon("StatusBar.busyIcons[" + i + "]");
}
busyIconTimer = new Timer(busyAnimationRate, new ActionListener() {
public void actionPerformed(ActionEvent e) {
busyIconIndex = (busyIconIndex + 1) % busyIcons.length;
statusAnimationLabel.setIcon(busyIcons[busyIconIndex]);
}
});
idleIcon = resourceMap.getIcon("StatusBar.idleIcon");
statusAnimationLabel.setIcon(idleIcon);
progressBar.setVisible(false);
// connecting action tasks to status bar via TaskMonitor
TaskMonitor taskMonitor = new TaskMonitor(getApplication().getContext());
taskMonitor.addPropertyChangeListener(new java.beans.PropertyChangeListener() {
public void propertyChange(java.beans.PropertyChangeEvent evt) {
String propertyName = evt.getPropertyName();
if ("started".equals(propertyName)) {
if (!busyIconTimer.isRunning()) {
statusAnimationLabel.setIcon(busyIcons[0]);
busyIconIndex = 0;
busyIconTimer.start();
}
progressBar.setVisible(true);
progressBar.setIndeterminate(true);
} else if ("done".equals(propertyName)) {
busyIconTimer.stop();
statusAnimationLabel.setIcon(idleIcon);
progressBar.setVisible(false);
progressBar.setValue(0);
} else if ("message".equals(propertyName)) {
String text = (String)(evt.getNewValue());
statusMessageLabel.setText((text == null) ? "" : text);
messageTimer.restart();
} else if ("progress".equals(propertyName)) {
int value = (Integer)(evt.getNewValue());
progressBar.setVisible(true);
progressBar.setIndeterminate(false);
progressBar.setValue(value);
}
}
});
}
@Action
public void showAboutBox() {
if (aboutBox == null) {
JFrame mainFrame = IntegerSumsApp.getApplication().getMainFrame();
aboutBox = new IntegerSumsAboutBox(mainFrame);
aboutBox.setLocationRelativeTo(mainFrame);
}
IntegerSumsApp.getApplication().show(aboutBox);
}
/** This method is called from within the constructor to
* initialize the form.
* WARNING: Do NOT modify this code. The content of this method is
* always regenerated by the Form Editor.
*/
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
mainPanel = new javax.swing.JPanel();
integerLabel = new javax.swing.JLabel();
enterIntField = new javax.swing.JTextField();
addIntButton = new javax.swing.JButton();
sumAllButton = new javax.swing.JButton();
userOutputField = new javax.swing.JTextField();
sumEvenButton = new javax.swing.JButton();
jScrollPane1 = new javax.swing.JScrollPane();
userOutputArea = new javax.swing.JTextArea();
sumOddButton = new javax.swing.JButton();
removeIntButton = new javax.swing.JButton();
menuBar = new javax.swing.JMenuBar();
javax.swing.JMenu fileMenu = new javax.swing.JMenu();
javax.swing.JMenuItem exitMenuItem = new javax.swing.JMenuItem();
javax.swing.JMenu helpMenu = new javax.swing.JMenu();
javax.swing.JMenuItem aboutMenuItem = new javax.swing.JMenuItem();
statusPanel = new javax.swing.JPanel();
javax.swing.JSeparator statusPanelSeparator = new javax.swing.JSeparator();
statusMessageLabel = new javax.swing.JLabel();
statusAnimationLabel = new javax.swing.JLabel();
progressBar = new javax.swing.JProgressBar();
org.jdesktop.application.ResourceMap resourceMap = org.jdesktop.application.Application.getInstance(integersums.IntegerSumsApp.class).getContext().getResourceMap(IntegerSumsView.class);
integerLabel.setText(resourceMap.getString("integerLabel.text")); // NOI18N
integerLabel.setName("integerLabel"); // NOI18N
enterIntField.setText(resourceMap.getString("enterIntField.text")); // NOI18N
enterIntField.setName("enterIntField"); // NOI18N
addIntButton.setText(resourceMap.getString("addIntButton.text")); // NOI18N
addIntButton.setName("addIntButton"); // NOI18N
addIntButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
addIntButtonActionPerformed(evt);
}
});
sumAllButton.setText(resourceMap.getString("sumAllButton.text")); // NOI18N
sumAllButton.setName("sumAllButton"); // NOI18N
sumAllButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
sumAllButtonActionPerformed(evt);
}
});
userOutputField.setText(resourceMap.getString("userOutputField.text")); // NOI18N
userOutputField.setName("userOutputField"); // NOI18N
sumEvenButton.setText(resourceMap.getString("sumEvenButton.text")); // NOI18N
sumEvenButton.setName("sumEvenButton"); // NOI18N
sumEvenButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
sumEvenButtonActionPerformed(evt);
}
});
jScrollPane1.setName("jScrollPane1"); // NOI18N
userOutputArea.setColumns(20);
userOutputArea.setRows(5);
userOutputArea.setName("userOutputArea"); // NOI18N
jScrollPane1.setViewportView(userOutputArea);
sumOddButton.setText(resourceMap.getString("sumOddButton.text")); // NOI18N
sumOddButton.setName("sumOddButton"); // NOI18N
sumOddButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
sumOddButtonActionPerformed(evt);
}
});
removeIntButton.setText(resourceMap.getString("removeIntButton.text")); // NOI18N
removeIntButton.setName("removeIntButton"); // NOI18N
removeIntButton.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
removeIntButtonActionPerformed(evt);
}
});
javax.swing.GroupLayout mainPanelLayout = new javax.swing.GroupLayout(mainPanel);
mainPanel.setLayout(mainPanelLayout);
mainPanelLayout.setHorizontalGroup(
mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addContainerGap()
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(userOutputField, javax.swing.GroupLayout.DEFAULT_SIZE, 372, Short.MAX_VALUE)
.addGroup(mainPanelLayout.createSequentialGroup()
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, mainPanelLayout.createSequentialGroup()
.addComponent(addIntButton)
.addGap(89, 89, 89))
.addGroup(mainPanelLayout.createSequentialGroup()
.addComponent(sumAllButton)
.addGap(73, 73, 73))
.addGroup(mainPanelLayout.createSequentialGroup()
.addComponent(sumEvenButton)
.addGap(61, 61, 61))
.addGroup(mainPanelLayout.createSequentialGroup()
.addComponent(sumOddButton)
.addGap(65, 65, 65)))
.addGroup(mainPanelLayout.createSequentialGroup()
.addComponent(integerLabel)
.addGap(18, 18, 18)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(removeIntButton)
.addComponent(enterIntField, javax.swing.GroupLayout.PREFERRED_SIZE, 30, javax.swing.GroupLayout.PREFERRED_SIZE))))
.addGap(18, 18, 18)
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 181, javax.swing.GroupLayout.PREFERRED_SIZE)))
.addGap(18, 18, 18))
);
mainPanelLayout.setVerticalGroup(
mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addGap(48, 48, 48)
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(integerLabel)
.addComponent(enterIntField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGroup(mainPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(mainPanelLayout.createSequentialGroup()
.addGap(36, 36, 36)
.addComponent(removeIntButton))
.addGroup(mainPanelLayout.createSequentialGroup()
.addGap(18, 18, 18)
.addComponent(addIntButton)
.addGap(8, 8, 8)
.addComponent(sumAllButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(sumEvenButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(sumOddButton)))
.addGap(19, 19, 19))
.addGroup(mainPanelLayout.createSequentialGroup()
.addComponent(jScrollPane1, javax.swing.GroupLayout.PREFERRED_SIZE, 151, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)))
.addComponent(userOutputField, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addContainerGap(17, Short.MAX_VALUE))
);
menuBar.setName("menuBar"); // NOI18N
fileMenu.setText(resourceMap.getString("fileMenu.text")); // NOI18N
fileMenu.setName("fileMenu"); // NOI18N
javax.swing.ActionMap actionMap = org.jdesktop.application.Application.getInstance(integersums.IntegerSumsApp.class).getContext().getActionMap(IntegerSumsView.class, this);
exitMenuItem.setAction(actionMap.get("quit")); // NOI18N
exitMenuItem.setName("exitMenuItem"); // NOI18N
fileMenu.add(exitMenuItem);
menuBar.add(fileMenu);
helpMenu.setText(resourceMap.getString("helpMenu.text")); // NOI18N
helpMenu.setName("helpMenu"); // NOI18N
aboutMenuItem.setAction(actionMap.get("showAboutBox")); // NOI18N
aboutMenuItem.setName("aboutMenuItem"); // NOI18N
helpMenu.add(aboutMenuItem);
menuBar.add(helpMenu);
statusPanel.setName("statusPanel"); // NOI18N
statusPanelSeparator.setName("statusPanelSeparator"); // NOI18N
statusMessageLabel.setName("statusMessageLabel"); // NOI18N
statusAnimationLabel.setHorizontalAlignment(javax.swing.SwingConstants.LEFT);
statusAnimationLabel.setName("statusAnimationLabel"); // NOI18N
progressBar.setName("progressBar"); // NOI18N
javax.swing.GroupLayout statusPanelLayout = new javax.swing.GroupLayout(statusPanel);
statusPanel.setLayout(statusPanelLayout);
statusPanelLayout.setHorizontalGroup(
statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(statusPanelSeparator, javax.swing.GroupLayout.DEFAULT_SIZE, 400, Short.MAX_VALUE)
.addGroup(statusPanelLayout.createSequentialGroup()
.addContainerGap()
.addComponent(statusMessageLabel)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 230, Short.MAX_VALUE)
.addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(statusAnimationLabel)
.addContainerGap())
);
statusPanelLayout.setVerticalGroup(
statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(statusPanelLayout.createSequentialGroup()
.addComponent(statusPanelSeparator, javax.swing.GroupLayout.PREFERRED_SIZE, 2, javax.swing.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.addGroup(statusPanelLayout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(statusMessageLabel)
.addComponent(statusAnimationLabel)
.addComponent(progressBar, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(3, 3, 3))
);
setComponent(mainPanel);
setMenuBar(menuBar);
setStatusBar(statusPanel);
}// </editor-fold>
private void addIntButtonActionPerformed(java.awt.event.ActionEvent evt) {
//I apologize if these comments are a little imformal...or doesn't quite make sense, I'm fairly new at this
//Here, you add any integer into the enterIntField, and after pressing the addIntButton, the integer is inputted into the
//userOutputArea,
//the "null" is for when you go to add a second integer, it does not input both first integer again ( as well as the second integer)
//you can add up to 10 different variables.
//Now I would also like to say I apologize if my any of my terminology is wrong...or makes no sense
aryInteger[position] = Integer.parseInt(enterIntField.getText());
position ++;
userOutputArea.setText(null);
for (int i = 0; i < position; i++) {
userOutputArea.setText(userOutputArea.getText() + aryInteger[i] + "\n");
}
}
private void sumAllButtonActionPerformed(java.awt.event.ActionEvent evt) {
//this adds all numbers inputted and outputs it the userOutputField...
int sumall = 0;
for(int i = 0; i < position; i++)
{
sumall += aryInteger[i];
}
userOutputField.setText("The sum of all numbers is " + sumall);
}
private void sumEvenButtonActionPerformed(java.awt.event.ActionEvent evt) {
//add all even numbers
int sumeven = 0;
for(int i = 0; i < position; i++)
{
if(aryInteger[i]%2==0) {
sumeven += aryInteger[i];
}
}
userOutputField.setText("The sum of all even numbers is " + sumeven);
}
private void sumOddButtonActionPerformed(java.awt.event.ActionEvent evt) {
//adds only the odd numbers...
int sumodd = 0;
for(int i = 0; i < position; i++)
{
if(aryInteger[i]%2!=0) {
sumodd += aryInteger[i];
}
}
userOutputField.setText("The sum of all odd numbers is " + sumodd);
}
问题就在下面......
private void removeIntButtonActionPerformed(java.awt.event.ActionEvent evt) {
这里是我想创建一个'删除'按钮，它取出已经输入userOutputArea的所有整数。 所以用户可以从头开始而不必退出程序并重新打开它。
我原本以为它会是“我”，因为这是用于在'addIntButtonActionPerformed'下面添加整数的变量/字母 ......但是再说一次，也许“i”只是强调，因为在公共课下没有提到它？但那我将在那里添加什么 没有弄乱别的东西？这对我来说是最有意义的，但是......这只是我用java制作的第五个程序，所以我认为我很有可能犯错误。 我知道这是可怜的，但这是我目前最好的尝试，我在等待回复的时候仍在尝试。即使是一个小小的提示也会非常感激！
aryInteger.remove(i);
}
// 3 5 6 8 9
// Variables declaration - do not modify
private javax.swing.JButton addIntButton;
private javax.swing.JTextField enterIntField;
private javax.swing.JLabel integerLabel;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JPanel mainPanel;
private javax.swing.JMenuBar menuBar;
private javax.swing.JProgressBar progressBar;
private javax.swing.JButton removeIntButton;
private javax.swing.JLabel statusAnimationLabel;
private javax.swing.JLabel statusMessageLabel;
private javax.swing.JPanel statusPanel;
private javax.swing.JButton sumAllButton;
private javax.swing.JButton sumEvenButton;
private javax.swing.JButton sumOddButton;
private javax.swing.JTextArea userOutputArea;
private javax.swing.JTextField userOutputField;
// End of variables declaration
答案 0 :(得分：2)
您似乎想要清除JTextArea类型组件userOutputArea。如果我做对了，那么这行代码就应该这样做：
userOutputArea.setText("");
如果您有其他意思，请进一步澄清您的任务。