JOptionPane常用提示框

 //JOptionPane.showMessageDialog(parentComponent, message, title, messageType, icon);
 JOptionPane.showMessageDialog(null, "message", "title",JOptionPane.INFORMATION_MESSAGE,new ImageIcon("psb.jpg"));

 JOptionPane.showConfirmDialog(null, "message", "title",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.QUESTION_MESSAGE);
 //JOptionPane.showConfirmDialog(parentComponent, message, title, optionType, messageType, icon);
 JOptionPane.showConfirmDialog(null, "message", "title",JOptionPane.YES_NO_CANCEL_OPTION,JOptionPane.QUESTION_MESSAGE,new ImageIcon("psb.jpg"));

 String str [] = {"篮球","足球","排球"};
 //JOptionPane.showInputDialog(parentComponent, message, title, messageType, icon, selectionValues, initialSelectionValue)
 JOptionPane.showInputDialog(null, "message", "title",JOptionPane.INFORMATION_MESSAGE,new ImageIcon("psb.jpg") ,str, str[0]);

 String str [] = {"篮球","足球","排球"};
 //JOptionPane.showOptionDialog(parentComponent, message, title, optionType, messageType, icon, options, initialValue)
 JOptionPane.showOptionDialog(null,"message","title",JOptionPane.YES_NO_OPTION,JOptionPane.QUESTION_MESSAGE,new ImageIcon("psb.jpg"),str,str[0]);

函数字段中存在  Internal  则该提示框  parentComponent  不能为空。