add corePanelを呼び出すか、electivePanelメソッドを追加するときはいつでも、Jpanelで設定した4つの列に新しいボタンを追加する代わりに、追加された最後のボタンを置き換えるだけです。
変数が実際にはボタンである場合に、変数にPanelという名前を付けたことは承知していますが、それは関係ありません。
本当に助けが必要です。
ありがとう
編集:ボタンの上にマウスを置くと、ボタン内のすべての情報(Jpanel)が消えますか?
package Assignment2.view;
import java.awt.Color;
import java.awt.GridLayout;
import javax.swing.BorderFactory;
import javax.swing.JButton;
import javax.swing.JFrame;
import javax.swing.JLabel;
import javax.swing.JPanel;
import javax.swing.border.Border;
import ams.model.Course;
public class CoursePanel extends JPanel
{
private JButton corePanel = new JButton();
private JButton electivePanel = new JButton();
private JLabel ccLabel = new JLabel("Code: ");
private JLabel titleLabel = new JLabel("Title: ");
private JLabel cpLabel = new JLabel("Credit Points: ");
private JLabel prLabel = new JLabel("Prereqs: ");
private Border blackline;
public CoursePanel()
{
setLayout(new GridLayout(0,4));
}
public void addcorePanel(Course createcourse)
{
// core panel properties
blackline = BorderFactory.createLineBorder(Color.black,10);
corePanel.setLayout(new GridLayout(4,1));
corePanel.setBackground(Color.GRAY);
corePanel.setBorder(blackline);
corePanel.add(ccLabel);
corePanel.add(titleLabel);
corePanel.add(cpLabel);
corePanel.add(prLabel);
corePanel.setAlignmentX(LEFT_ALIGNMENT);
corePanel.setAlignmentY(TOP_ALIGNMENT);
//Needed to rebuild the prerequisites for display.
String[] prereqs = null;
String result = null;
prereqs = createcourse.getPreReqs();
if (prereqs != null)
{
StringBuilder builder = new StringBuilder();
for(String s : prereqs)
{
builder.append(s);
builder.append("\n");
}
result = builder.toString();
}
ccLabel.setText("Code: " + createcourse.getCode());
titleLabel.setText("Title: " + createcourse.getTitle());
cpLabel.setText("Credit points: " + Integer.toString(createcourse.getCreditPoints()));
prLabel.setText("Prereqs: " + result);
add(corePanel);
}
public void addelectivePanel(Course createcourseE)
{
//elective panel properties
electivePanel.setLayout(new GridLayout(4,1));
electivePanel.setBackground(Color.GRAY);
electivePanel.add(ccLabel);
electivePanel.add(titleLabel);
electivePanel.add(cpLabel);
electivePanel.add(prLabel);
electivePanel.setAlignmentX(LEFT_ALIGNMENT);
electivePanel.setAlignmentY(TOP_ALIGNMENT);
//Needed to rebuild the prerequisites for display.
String[] prereqs = null;
String result = null;
prereqs = createcourseE.getPreReqs();
if (prereqs != null)
{
StringBuilder builder = new StringBuilder();
for(String s : prereqs)
{
builder.append(s);
builder.append("\n");
}
result = builder.toString();
}
ccLabel.setText("Code: " + createcourseE.getCode());
titleLabel.setText("Title: " + createcourseE.getTitle());
cpLabel.setText("Credit points: " + Integer.toString(createcourseE.getCreditPoints()));
prLabel.setText("Prereqs: " + result);
add(electivePanel);
}
}