为什么我不能隐藏我的Java类中的JFrame
问题描述:
我是java新手,我正在开发基本的国际象棋游戏,目前我在玩家名称屏幕上工作,我无法弄清楚如何隐藏我的jPanel。我得到一个错误说,它不能在这里找到一个符号的代码:为什么我不能隐藏我的Java类中的JFrame
package chess;
import java.awt.Color;
public class ChessUI extends javax.swing.JFrame {
public String pOneName;
public String pTwoName;
public ChessUI() {
initComponents();
getContentPane().setBackground(Color.white);
}
/**
* 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() {
jLabel2 = new javax.swing.JLabel();
jLabel3 = new javax.swing.JLabel();
playerOneNameText = new javax.swing.JTextField();
playerTwoNameText = new javax.swing.JTextField();
playButton = new javax.swing.JButton();
jLabel1 = new javax.swing.JLabel();
jLabel4 = new javax.swing.JLabel();
errorText = new javax.swing.JLabel();
setDefaultCloseOperation(javax.swing.WindowConstants.EXIT_ON_CLOSE);
jLabel2.setText("Player One Name:");
jLabel3.setText("Player Two Name:");
playerOneNameText.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
playerOneNameTextActionPerformed(evt);
}
});
playerTwoNameText.addActionListener(new java.awt.event.ActionListener() {
public void actionPerformed(java.awt.event.ActionEvent evt) {
playerTwoNameTextActionPerformed(evt);
}
});
playButton.setText("Play");
playButton.addMouseListener(new java.awt.event.MouseAdapter() {
public void mouseClicked(java.awt.event.MouseEvent evt) {
playButtonMouseClicked(evt);
}
});
pack();
}// </editor-fold>
private void playerOneNameTextActionPerformed(java.awt.event.ActionEvent evt) {
// TODO add your handling code here:
}
private void playerTwoNameTextActionPerformed(java.awt.event.ActionEvent evt) {
}
private void playButtonMouseClicked(java.awt.event.MouseEvent evt) {
if (playerOneNameText.getText().equals(""))
{
errorText.setText("One or More Player Names Missing !");
}
if (playerTwoNameText.getText().equals(""))
{
errorText.setText("One or More Player Names Missing !");
}
pOneName = playerOneNameText.getText();
pTwoName = playerTwoNameText.getText();
ChessUI.setVisibile(false); //Error Here
}
/**
* @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(ChessUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (InstantiationException ex) {
java.util.logging.Logger.getLogger(ChessUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (IllegalAccessException ex) {
java.util.logging.Logger.getLogger(ChessUI.class.getName()).log(java.util.logging.Level.SEVERE, null, ex);
} catch (javax.swing.UnsupportedLookAndFeelException ex) {
java.util.logging.Logger.getLogger(ChessUI.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 ChessUI().setVisible(true);
}
});
}
// Variables declaration - do not modify
private javax.swing.JLabel errorText;
private javax.swing.JLabel jLabel1;
private javax.swing.JLabel jLabel2;
private javax.swing.JLabel jLabel3;
private javax.swing.JLabel jLabel4;
private javax.swing.JButton playButton;
private javax.swing.JTextField playerOneNameText;
private javax.swing.JTextField playerTwoNameText;
// End of variables declaration
}
,我得到的是错误:非静态方法调用setVisible(布尔)不能从静态上下文中引用
答
ChessUI.setVisibile(false)
是参考Class
而不是Object
。
Class
描述了Object
的一个实例。
为了在Class
上调用(非静态)方法,必须引用该实例Class
(即Object
)。
在你的情况,只需拨打setVisible(false)
应该工作。
虽然这可能听起来很混乱,但可以这样想。如果你有两个ChessUI
的实例会发生什么?你会如何区分它们?
+0
谢谢你我所做的是改变ChessUI(类名)这个 – CodeLover
什么是实际的错误信息?什么符号?什么线?为什么你让我们猜测? –
对不起第二个 – CodeLover
会在一会儿加上 – CodeLover