[英]How to display output on textfield in java?
我又有了這段代碼,我被困在必須將數組中的數字之一打印到swing文本字段的部分。 我讓它一次在awt中工作,但是我似乎無法使其搖擺。 這是代碼:
import java.awt.Container;
import java.awt.FlowLayout;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JTextField;
import javax.swing.SwingUtilities;
public class Koodibaasitäiustus extends JFrame {
/**
*
*/
private static final long serialVersionUID = 1L;
private JTextField tfCount;
public Koodibaasitäiustus() {
Container cp = getContentPane();
cp.setLayout(new FlowLayout());
setResizable(false);
cp.add(new JLabel("enter code"));
tfCount = new JTextField("0", 10);
tfCount.setEditable(true);
cp.add(tfCount);
JButton nupp = new JButton("get answer");
cp.add(nupp);
nupp.addActionListener(new ActionListener() {
@Override
public void actionPerformed(ActionEvent evt) {
int[] array;
array = new int[30];
array[0] = 111111;
array[1] = 888888;
array[2] = 333333;
array[3] = 555555;
array[4] = 111111;
array[5] = 643208;
array[6] = 643208;
array[7] = 643208;
array[8] = 643208;
array[9] = 643208;
array[10] = 643208;
array[11] = 643208;
array[12] = 643208;
array[13] = 643208;
array[14] = 643208;
array[15] = 643208;
array[16] = 643208;
array[17] = 643208;
array[18] = 643208;
array[19] = 643208;
array[20] = 643208;
array[21] = 643208;
array[22] = 643208;
array[23] = 643208;
array[24] = 643208;
array[25] = 643208;
array[26] = 643208;
array[27] = 643208;
array[28] = 643208;
array[29] = 643208;
array[30] = 643208;
int number = Integer.parseInt(tfCount.getText());
tfCount.setText(String.valueOf(array[number]));
}
});
setDefaultCloseOperation(JFrame.EXIT_ON_CLOSE);
setTitle("Koodibaas");
setSize(300, 100);
setVisible(true);
}
public static void main(String[] args) {
SwingUtilities.invokeLater(new Runnable() {
@Override
public void run() {
new Koodibaasitäiustus();
}
});
}
}
您的代碼是“好”
線array[30] = 643208;
是什么造成了問題,因為您的數組只能包含30個元素...從0到29
如果您將其注釋掉或刪除此行...一切都會正常
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