Java 我需要帮助。I';我正在写一个有GUI的程序
用户将输入一个介于1和99之间的数字。我已经写了我的大部分代码,我只是想不出用calculate按钮来计算它。我真的需要一步一步的帮助,如果有人能帮助我,我愿意学习。我是个初学者Java 我需要帮助。I';我正在写一个有GUI的程序,java,swing,actionlistener,Java,Swing,Actionlistener,用户将输入一个介于1和99之间的数字。我已经写了我的大部分代码,我只是想不出用calculate按钮来计算它。我真的需要一步一步的帮助,如果有人能帮助我,我愿意学习。我是个初学者 package minimumchris; import javax.swing.JButton; import javax.swing.JTextField; public class useri extends javax.swing.JFrame { public useri() {
package minimumchris;
import javax.swing.JButton;
import javax.swing.JTextField;
public class useri extends javax.swing.JFrame {
public useri() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
jScrollPane1 = new javax.swing.JScrollPane();
jLabel1 = new javax.swing.JLabel();
jTextField1 = new javax.swing.JTextField();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jButton1 = new javax.swing.JButton();
jButton2 = new javax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText("enter a number between 1-99");
jLabel2.setText("quarters");
jLabel3.setText("dimes");
jLabel4.setText("nickels");
jLabel5.setText("pennies");
jButton1.setText("calculate");
jButton1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jButton1ActionPerformed(evt);
}
});
jButton2.setText("clear");
org.jdesktop.layout.GroupLayout layout = new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jLabel1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 197, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE)
.add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 47, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.add(layout.createSequentialGroup()
.add(66, 66, 66)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel5)
.add(jLabel4)
.add(jLabel3)
.add(jLabel2))
.add(0, 0, Short.MAX_VALUE)))
.addContainerGap())
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jButton1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 195, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jButton2, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, 177, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(16, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(jTextField1, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jLabel1))
.add(32, 32, 32)
.add(jLabel2)
.add(18, 18, 18)
.add(jLabel3)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)
.add(jLabel4)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jLabel5)
.add(29, 29, 29)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING, false)
.add(jButton2, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, 73, Short.MAX_VALUE)
.add(jButton1, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, org.jdesktop.layout.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
.addContainerGap(32, Short.MAX_VALUE))
);
pack();
}// </editor-fold>
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
int cntrquart = 0;
int cntrdimes = 0;
int cntrpennies = 0;
int cntrnickels = 0;
JTextField jTextField=new JTextField(); // initialize textFild
JButton calculate =jButton1;
int quarters = Integer.parseInt(jTextField.getText());
while (quarters >= 25)
{
quarters = quarters - 25;
cntrquart++;
}
//dimes
int dimes = quarters;
while (dimes >= 10)
{
dimes = dimes - 10;
cntrdimes++;
}
//nickels
int nickels = dimes;
while (nickels >= 5)
{
nickels = nickels - 5;
cntrnickels++;
}
//pennies
int pennies = nickels;
while (pennies >= 1)
{
pennies = pennies - 1;
cntrpennies++;
}
jLabel2.setText("Quarter" + cntrquart );
jLabel3.setText("Dimes:" + cntrdimes );
jLabel4.setText("Nickels:" + cntrnickels );
jLabel5.setText("Pennies:" + cntrpennies );
}
/**
* @param args the command line arguments
*/
public static void main(String args[]) {
/* Set the Nimbus look and feel */
//<editor-fold defaultstate="collapsed" desc=" Look and feel setting code (optional) ">
/* If Nimbus (introduced in Java SE 6) is not available, stay with the default look and feel.
* For details see http://download.oracle.com/javase/tutorial/uiswing/lookandfeel/plaf.html
*/
try {
for (javax.swing.UIManager.LookAndFeelInfo info : javax.swing.UIManager.getInstalledLookAndFeels()) {
if ("Nimbus".equals(info.getName())) {
javax.swing.UIManager.setLookAndFeel(info.getClassName());
break;
}
}
} catch (ClassNotFoundException ex) {
java.util.logging.Logger.getLogger(useri.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(useri.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(useri.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(useri.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
@Override
public void run() {
new useri().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JButton jButton1;
private javax.swing.JButton jButton2;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JLabel jLabel5;
private javax.swing.JScrollPane jScrollPane1;
private javax.swing.JTextField jTextField1;
// End of variables declaration
}
package minimumchris;
导入javax.swing.JButton;
导入javax.swing.JTextField;
公共类useri扩展了javax.swing.JFrame{
公共用户i(){
初始化组件();
}
@抑制警告(“未选中”)
//
私有组件(){
jScrollPane1=newjavax.swing.JScrollPane();
jLabel1=newjavax.swing.JLabel();
jTextField1=newjavax.swing.JTextField();
jLabel2=newjavax.swing.JLabel();
jLabel3=newjavax.swing.JLabel();
jLabel4=newjavax.swing.JLabel();
jLabel5=newjavax.swing.JLabel();
jButton1=newjavax.swing.JButton();
jButton2=newjavax.swing.JButton();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel1.setText(“输入一个介于1-99之间的数字”);
jLabel2.setText(“季度”);
jLabel3.setText(“dimes”);
jLabel4.setText(“镍币”);
jLabel5.setText(“便士”);
jButton1.setText(“计算”);
jButton1.addActionListener(新java.awt.event.ActionListener(){
public void actionPerformed(java.awt.event.ActionEvent evt){
jButton1ActionPerformed(evt);
}
});
jButton2.setText(“清除”);
org.jdesktop.layout.GroupLayout=new org.jdesktop.layout.GroupLayout(getContentPane());
getContentPane().setLayout(布局);
layout.setHorizontalGroup(
createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jLabel1,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,197,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED,org.jdesktop.layout.GroupLayout.DEFAULT\u SIZE,Short.MAX\u值)
.add(jTextField1,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,47,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE))
.add(layout.createSequentialGroup()
.增补(66、66、66)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(jLabel5)
.add(jLabel4)
.add(jLabel3)
.add(jLabel2))
.add(0,0,短.MAX_值)))
.addContainerGap())
.add(layout.createSequentialGroup()
.addContainerGap()
.add(jButton1,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,195,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jButton2,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,177,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.addContainerGap(16,简称最大值))
);
layout.setVerticalGroup(
createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING)
.add(layout.createSequentialGroup()
.addContainerGap()
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.TRAILING)
.add(jTextField1,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE,org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,org.jdesktop.layout.GroupLayout.PREFERRED_SIZE)
.add(jLabel1))
.add(32,32,32)
.add(jLabel2)
.增补(18、18、18)
.add(jLabel3)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.UNRELATED)
.add(jLabel4)
.addPreferredGap(org.jdesktop.layout.LayoutStyle.RELATED)
.add(jLabel5)
.add(29,29,29)
.add(layout.createParallelGroup(org.jdesktop.layout.GroupLayout.LEADING,false)
.add(jButton2,org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,73,Short.MAX_值)
.add(jButton1,org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,org.jdesktop.layout.GroupLayout.DEFAULT_SIZE,Short.MAX_VALUE))
.addContainerGap(32,简称最大值))
);
包装();
}//
私有void jButton1ActionPerformed(java.awt.event.ActionEvent evt){
int cntrquart=0;
int cntrimes=0;
int cntrpennies=0;
int cntrnickels=0;
JTextField JTextField=new JTextField();//初始化textFild
JButton calculate=jButton1;
int=Integer.parseInt(jTextField.getText());
而(季度>=25)
{
季度=季度-25;
cntrquart++;
}
//一角硬币
整数一角=四分之一;
而(一角硬币>=10)
{
一角硬币=一角硬币-10;
cntrdimes++;
}
//镍币
整数镍币=一角硬币;
而(镍币>=5)
{
镍币=镍币-5;
cntrnickels++;
}
//便士
整数便士=五分镍币;
而(便士>=1)
{
便士=便士-1;
cntrpennies++;
}
jLabel2.setText(“四分之一”+cntrquart);
jLabel3.setText(“Dimes:+cntrimes”);
jLabel4.setText(“镍币:+cntrnickels”);
jLabel5.setText(“便士:+cntrpennies”);
}
JTextField jTextField=new JTextField(); // useless
JButton calculate =jButton1; // useless
int quarters = Integer.parseInt(jTextField.getText()); // should use jTextField1 (probably)
JTextField jTextField=new JTextField();
int quaters = Integer.parseInt(jTextField1.getText());
while (quarters >= 25){
quarters = quarters - 25;
cntrquart++;
}
int dimes = quarters;
//...
cntrlquart = quarters / 25; //Integer division
int dimes = quarters % 25; //Mod operation, remainder of dividing by 25.