import javax.swing.BoxLayout;
import javax.swing.JApplet;
import javax.swing.JButton;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.JTextField;
import java.awt.Dimension;
import java.awt.GridBagConstraints;
import java.awt.GridBagLayout;
import java.awt.Insets;
public class LoginApplet extends JApplet { /**
*
*/
private static final long serialVersionUID = 1L;
JLabel titlePage;
JLabel[] txt;
JTextField[] jtf;
JButton accept, decline;
JPanel jp1, jp2, jp3;
public void init(){
setSize(400,400);
JPanel content = (JPanel)getContentPane();
GridBagConstraints firstCol = new GridBagConstraints();
firstCol.weightx = 1.0;
firstCol.anchor = GridBagConstraints.WEST;
firstCol.insets = new Insets(5, 20, 5, 5);
GridBagConstraints lastCol = new GridBagConstraints();
lastCol.gridwidth = GridBagConstraints.REMAINDER;
lastCol.weightx = 1.0;
lastCol.fill = GridBagConstraints.HORIZONTAL;
lastCol.insets = new Insets(5, 5, 5, 20);
String[] labeltxt = {"Username", "Password"};
titlePage = new JLabel("Create New Account");
txt = new JLabel[2];
jtf = new JTextField[2];
accept = new JButton("Create");
decline = new JButton("Decline");
jp1 = new JPanel();
jp2 = new JPanel(new GridBagLayout());
jp3 = new JPanel();
for(int i=0; i<labeltxt.length; i++) {
txt[i] = new JLabel();
txt[i].setText(labeltxt[i]);
jp2.add(txt[i], firstCol);
jtf[i] = new JTextField();
jtf[i].setPreferredSize(new Dimension(300, 20));
jp2.add(jtf[i], lastCol);
}
jp1.add(titlePage);
jp3.add(accept);
jp3.add(decline);
content.setLayout(new BoxLayout(content, BoxLayout.Y_AXIS));
content.add(jp1);
content.add(jp2);
content.add(jp3);
}
public void setVisible(boolean b) {
// TODO Auto-generated method stub
}
}
嗨,大家好..我已經發布了這個代碼是從類LoginApplet其被通過的actionPerformed從另一個類叫....我沒有問題,將其設置爲JFrame(此作業的標題在JApplet中)。現在,當我將它轉換爲JApplet問題出現時。我對JApplet不熟悉,並且運行時代碼顯示爲空白有什麼問題嗎?我JApplet的編譯,但它出現在applet查看空白
爲什麼代碼的小程序?如果這是由於規格。由老師,請參考[爲什麼CS老師應該停止教Java applets](http://programmers.blogoverflow.com/2013/05/why-cs-teachers-should-stop-teaching-java-applets/)。 –
我不得不將jframe更改爲japplet以遵循這個標題..... – hs2345