我的问题是我正在将整个数组读取到textField中。我需要把它们分开。目标是显示堆栈在运动中的ui。如何将它们分隔为单独的文本字段。有问题
面板如下：
public class StackPanel extends javax.swing.JPanel {
Random rnd = new Random();
MyStack stack = new MyStack();
private int top;
public StackPanel() {
initComponents();
clearLabels();
}
private void clearLabels() {
label1.setText("");
label2.setText("");
label3.setText("");
label4.setText("");
label5.setText("");
}
private void setTopTextField(String topValue) {
topValue = stack.toString();
if (top == 0) {
label1.setText(topValue);
} else if (top == 1) {
label2.setText(topValue);
} else if (top == 2) {
label3.setText(topValue);
} else if (top == 3) {
label4.setText(topValue);
} else if (top == 4) {
label5.setText(topValue);
}
}
/**
* 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() {
jTextField6 = new javax.swing.JTextField();
pushButton = new javax.swing.JButton();
popButton = new javax.swing.JButton();
label5 = new javax.swing.JTextField();
label4 = new javax.swing.JTextField();
label3 = new javax.swing.JTextField();
label2 = new javax.swing.JTextField();
label1 = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jTextField6.setText("jTextField6");
pushButton.setText("Push");
pushButton.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
pushButtonMouseClicked(evt);
}
});
popButton.setText("Pop");
popButton.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
popButtonMouseClicked(evt);
}
});
jLabel1.setText(" top");
jLabel2.setText("top");
jLabel3.setText("top");
jLabel4.setText("top");
jLabel5.setText("top");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(87, 87, 87)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel3)
.addComponent(jLabel4)
.addComponent(jLabel5))
.addGap(10, 10, 10)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(label1, javax.swing.GroupLayout.DEFAULT_SIZE, 88, Short.MAX_VALUE)
.addComponent(label2)
.addComponent(label3))
.addGap(66, 66, 66)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(popButton)
.addComponent(pushButton))
.addGap(53, 53, 53))
.addGroup(javax.swing.GroupLayout.Alignment.LEADING, layout.createSequentialGroup()
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(jLabel2, javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(jLabel1))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING, false)
.addComponent(label5, javax.swing.GroupLayout.DEFAULT_SIZE, 103, Short.MAX_VALUE)
.addComponent(label4))
.addContainerGap(javax.swing.GroupLayout.DEFAULT_SIZE, Short.MAX_VALUE))))
);
layout.setVerticalGroup(
layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addContainerGap(93, Short.MAX_VALUE)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(label5, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(label4, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2))
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(layout.createSequentialGroup()
.addGap(29, 29, 29)
.addComponent(pushButton)
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(popButton)
.addContainerGap())
.addGroup(javax.swing.GroupLayout.Alignment.TRAILING, layout.createSequentialGroup()
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(label3, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel3))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(label2, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel4))
.addPreferredGap(javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(layout.createParallelGroup(javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(label1, javax.swing.GroupLayout.PREFERRED_SIZE, javax.swing.GroupLayout.DEFAULT_SIZE, javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel5))
.addGap(43, 43, 43))))
);
}// </editor-fold>
private void pushButtonMouseClicked(java.awt.event.MouseEvent evt) {
stack.push(rnd.nextInt(99) + 1);
String topValue = String.valueOf(rnd.nextInt());
setTopTextField(topValue);
top++;
System.out.println(stack);
}
private void popButtonMouseClicked(java.awt.event.MouseEvent evt) {
stack.pop();
String topValue = String.valueOf(rnd.nextInt());
setTopTextField(topValue);
top--;
System.out.println(stack);
}
// Variables declaration - do not modify
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 jTextField6;
private javax.swing.JTextField label1;
private javax.swing.JTextField label2;
private javax.swing.JTextField label3;
private javax.swing.JTextField label4;
private javax.swing.JTextField label5;
private javax.swing.JButton popButton;
private javax.swing.JButton pushButton;
// End of variables declaration
}
这里是堆栈类：
public class MyStack {
private int[] values;
private int numberOfValues;
public MyStack(){
values= new int[5];
numberOfValues = 0;
}
public boolean isEmpty() {
return numberOfValues == 0;
}
public int peek(){
return values[values.length - numberOfValues];
}
public void push(int value){
if (numberOfValues <= 5) {
values[numberOfValues] = value;
numberOfValues++;
}
}
public void pop(){
for (int i = 1; i <= numberOfValues - 1; i++) {
values[i - 1] = values[i];
}
numberOfValues--;
}
@Override
public String toString() {
String str = "";
for (int i = 0; i <= numberOfValues - 1; i++) {
str += String.valueOf(values[i]) + " ";
}
// str += "]";
return str;
}
}
不是很好，但实际工作：
StackPanel：
import java.util.Random;
public class StackPanel extends javax.swing.JPanel {
Random rnd = new Random();
MyStack stack = new MyStack();
private int top;
public StackPanel() {
initComponents();
clearLabels();
}
private void clearLabels() {
label1.setText("");
label2.setText("");
label3.setText("");
label4.setText("");
label5.setText("");
}
private void setTopTextField(String topValue) {
if (top == 0) {
label1.setText(topValue);
} else if (top == 1) {
label2.setText(topValue);
} else if (top == 2) {
label3.setText(topValue);
} else if (top == 3) {
label4.setText(topValue);
} else if (top == 4) {
label5.setText(topValue);
}
}
/**
* 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() {
jTextField6 = new javax.swing.JTextField();
pushButton = new javax.swing.JButton();
popButton = new javax.swing.JButton();
label5 = new javax.swing.JTextField();
label4 = new javax.swing.JTextField();
label3 = new javax.swing.JTextField();
label2 = new javax.swing.JTextField();
label1 = new javax.swing.JTextField();
jLabel1 = new javax.swing.JLabel();
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
jLabel5 = new javax.swing.JLabel();
jTextField6.setText("jTextField6");
pushButton.setText("Push");
pushButton.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
pushButtonMouseClicked(evt);
}
});
popButton.setText("Pop");
popButton.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
popButtonMouseClicked(evt);
}
});
jLabel1.setText(" top");
jLabel2.setText("top");
jLabel3.setText("top");
jLabel4.setText("top");
jLabel5.setText("top");
javax.swing.GroupLayout layout = new javax.swing.GroupLayout(this);
this.setLayout(layout);
layout.setHorizontalGroup(layout
.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
layout.createSequentialGroup()
.addGap(87, 87, 87)
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.TRAILING)
.addGroup(
layout.createSequentialGroup()
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(
jLabel3)
.addComponent(
jLabel4)
.addComponent(
jLabel5))
.addGap(10, 10,
10)
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(
label1,
javax.swing.GroupLayout.DEFAULT_SIZE,
88,
Short.MAX_VALUE)
.addComponent(
label2)
.addComponent(
label3))
.addGap(66, 66,
66)
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(
popButton)
.addComponent(
pushButton))
.addGap(53, 53,
53))
.addGroup(
javax.swing.GroupLayout.Alignment.LEADING,
layout.createSequentialGroup()
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addComponent(
jLabel2,
javax.swing.GroupLayout.Alignment.TRAILING)
.addComponent(
jLabel1))
.addPreferredGap(
javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING,
false)
.addComponent(
label5,
javax.swing.GroupLayout.DEFAULT_SIZE,
103,
Short.MAX_VALUE)
.addComponent(
label4))
.addContainerGap(
javax.swing.GroupLayout.DEFAULT_SIZE,
Short.MAX_VALUE)))));
layout.setVerticalGroup(layout
.createParallelGroup(javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
javax.swing.GroupLayout.Alignment.TRAILING,
layout.createSequentialGroup()
.addContainerGap(93, Short.MAX_VALUE)
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(jLabel1)
.addComponent(
label5,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.PREFERRED_SIZE))
.addPreferredGap(
javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(
label4,
javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(jLabel2))
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.LEADING)
.addGroup(
layout.createSequentialGroup()
.addGap(29, 29,
29)
.addComponent(
pushButton)
.addPreferredGap(
javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addComponent(
popButton)
.addContainerGap())
.addGroup(
javax.swing.GroupLayout.Alignment.TRAILING,
layout.createSequentialGroup()
.addPreferredGap(
javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(
label3,
javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(
jLabel3))
.addPreferredGap(
javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(
label2,
javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(
jLabel4))
.addPreferredGap(
javax.swing.LayoutStyle.ComponentPlacement.RELATED)
.addGroup(
layout.createParallelGroup(
javax.swing.GroupLayout.Alignment.BASELINE)
.addComponent(
label1,
javax.swing.GroupLayout.PREFERRED_SIZE,
javax.swing.GroupLayout.DEFAULT_SIZE,
javax.swing.GroupLayout.PREFERRED_SIZE)
.addComponent(
jLabel5))
.addGap(43, 43,
43)))));
}// </editor-fold>
private void pushButtonMouseClicked(java.awt.event.MouseEvent evt) {
stack.push(rnd.nextInt(99));
setTopTextField(new Integer(stack.peek()).toString());
top++;
System.out.println(stack);
}
private void popButtonMouseClicked(java.awt.event.MouseEvent evt) {
stack.pop();
top--;
setTopTextField("");
System.out.println(stack);
}
// Variables declaration - do not modify
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 jTextField6;
private javax.swing.JTextField label1;
private javax.swing.JTextField label2;
private javax.swing.JTextField label3;
private javax.swing.JTextField label4;
private javax.swing.JTextField label5;
private javax.swing.JButton popButton;
private javax.swing.JButton pushButton;
// End of variables declaration
}
MyStack:
public class MyStack {
private int[] values;
private int numberOfValues;
public MyStack() {
values = new int[5];
numberOfValues = 0;
}
public boolean isEmpty() {
return numberOfValues == 0;
}
public int peek() {
return values[numberOfValues - 1];
}
public void push(int value) {
if (numberOfValues <= 5) {
values[numberOfValues] = value;
numberOfValues++;
}
}
public void pop() {
numberOfValues--;
}
@Override
public String toString() {
String str = "";
for (int i = 0; i <= numberOfValues - 1; i++) {
str += String.valueOf(values[i]) + " ";
}
// str += "]";
return str;
}
}