【发布时间】：2013-12-10 02:34:48
【问题描述】：
几周前我编写了一个程序来进行更改，现在我正在尝试将该程序变成一个 gui，但遇到了一些问题。我可以使用 Netbeans Jframe 编辑器制作 gui 并使 gui 看起来很漂亮，这使得我的问题很简单，试图弄清楚如何插入我的代码。我将我的程序插入到第一个 Jbutton 中，但无法弄清楚如何从 gui 而不是程序中获取用户输入。我单击 Jbutton，它要求控制台而不是 gui 来完成工作。请帮忙。
我的 gui 是什么样子的
原始代码
public static void main (String[] Args) {
// Initialize varriables
int quarters = 25;
int dimes = 10;
int nickles = 5;
int pennies = 1;
//Loop starts here
while(true) {
System.out.println("Enter in a number between 1-99");
// Blank Output for spacing
System.out.println();
// User Input "remember this for reference"
Scanner Userinput = new Scanner(System.in);
int input = Userinput.nextInt();
//while loop end
if(input<1) {
break; //break is a keyword that exits the loop when a condition is met.
}
int q = input/quarters;
input -= q*quarters;
String A = "Quarters:" +q;
//Blank Output for spacing
System.out.println();
//output quarters
System.out.println(A);
int d = input/dimes;
input -= d*dimes;
String B = "Dimes:" +d;
//output dimes
System.out.println(B);
int n = input/nickles;
input -= n*nickles;
String C = "Nickles:" +n;
//output nickles
System.out.println(C);
int p = input/pennies;
input -= p*pennies;
String D = "Pennies:" +p;
//output pennies
System.out.println(D);
}
}
使用 Netbeans Jframe 编辑器的带有 GUI 的当前代码
import java.util.Scanner;
/*
* To change this template, choose Tools | Templates
* and open the template in the editor.
*/
/**
*
* @author Christ
*/
public class coin extends javax.swing.JFrame {
public coin() {
initComponents();
}
@SuppressWarnings("unchecked")
// <editor-fold defaultstate="collapsed" desc="Generated Code">
private void initComponents() {
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 (1-99)");
jTextField1.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
jTextField1ActionPerformed(evt);
}
});
jLabel2.setText("Quarters");
jLabel3.setText("Dimes");
jLabel4.setText("Nickles");
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");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(getContentPane());
getContentPane().setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addContainerGap()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 179, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(18, 18, 18)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 179, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jLabel2, javax.swing.GroupLayout.PREFERRED_SIZE, 68, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGroup(layout.createSequentialGroup()
.addComponent(jLabel1, javax.swing.GroupLayout.PREFERRED_SIZE, 123, javax.swing.GroupLayout.PREFERRED_SIZE)
.addGap(68, 68, 68)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, 114, javax.swing.GroupLayout.PREFERRED_SIZE))
.addComponent(jLabel3)
.addComponent(jLabel4)
.addComponent(jLabel5))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(22, 22, 22)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(jTextField1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addGap(55, 55, 55)
.addComponent(jLabel2)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jLabel3)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jLabel4)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.UNRELATED)
.addComponent(jLabel5)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED, 53, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jButton1, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jButton2, javax.swing.GroupLayout.PREFERRED_SIZE, 50, javax.swing.GroupLayout.PREFERRED_SIZE))
.addContainerGap())
);
pack();
}// </editor-fold>
private void jTextField1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void jButton1ActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
// Initialize varriables
int quarters = 25;
int dimes = 10;
int nickles = 5;
int pennies = 1;
//Loop starts here
while(true) {
System.out.println("Enter in a number between 1-99");
// Blank Output for spacing
System.out.println();
// User Input "remember this for reference"
Scanner Userinput = new Scanner(System.in);
int input = Userinput.nextInt();
//while loop end
if(input<1) {
break; //break is a keyword that exits the loop when a condition is met.
}
int q = input/quarters;
input -= q*quarters;
String A = "Quarters:" +q;
//Blank Output for spacing
System.out.println();
//output quarters
System.out.println(A);
int d = input/dimes;
input -= d*dimes;
String B = "Dimes:" +d;
//output dimes
System.out.println(B);
int n = input/nickles;
input -= n*nickles;
String C = "Nickles:" +n;
//output nickles
System.out.println(C);
int p = input/pennies;
input -= p*pennies;
String D = "Pennies:" +p;
//output pennies
System.out.println(D);
}
}
/**
* @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(coin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(coin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(coin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(coin.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
}
//</editor-fold>
/* Create and display the form */
java.awt.EventQueue.invokeLater(new Runnable() {
public void run() {
new coin().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.JTextField jTextField1;
// End of variables declaration
}
现在我认为需要放弃将用户输入插入控制台以完成工作的扫描仪，并以某种方式从 gui 中的文本框中获取用户输入，但我完全不知道如何实现这一点
我也是一个初学者，所以如果你能让它易于理解将不胜感激，简单是最好的。
还找到了一个有用的 tut，但无法使用它来尝试完成我想要的工作。
链接到 Tut http://www.codeproject.com/Articles/33536/An-Introduction-to-Java-GUI-Programming
【问题讨论】：
-
使用 getText()。在你的 actionPerformed() 中使用它
-
如果你不明白，我建议你在开始使用 gui 编辑器之前阅读关于 swing 的 oracle 教程，但基本上 gui 是事件库.. 当你点击按钮
jButton1ActionPerformed(evt);这个方法得到执行，在这里你得到输入的数据！ -
我可以用 getText() 代替扫描仪吗？
标签： java swing user-interface actionlistener jtextfield