package hu.demos;import javax.swing.JOptionPane;import javax.swing.ImageIcon;import javax.swing.Icon;public class JOptionPaneDemo{ public static void main(String[] args) {  Icon icon = new ImageIcon("QQ.png");  int confirmMessage;  Object[] possibleValues = {"First", "Second", "Third"};  Object inputMessage;    //-----------------------------------------------------------------  // Usage:  // method: static String/Object | showInputDialog(Xxx)   //-----------------------------------------------------------------      /*1  showInputDialog(Object message);  *///  inputMessage = JOptionPane.showInputDialog ("Input a Integer:");        /*2  showInputDialog(Object message, Object initialSelectionValue)  *///  inputMessage = JOptionPane.showInputDialog ("message", new Integer(100));        /*3  showInputDialog(Component parentComponent, Object message);  *///  inputMessage = JOptionPane.showInputDialog(null,"Input a Integer:");        /*4  showInputDialog(Component praentComponent, Object message, Object inintialSelectionValue);  *///  inputMessage = JOptionPane.showInputDialog(null, "hello", possibleValues[0]);     /*5  showInputDialog(Component parentComponent, Object message,           String title, int messageType)  *//*  inputMessage = JOptionPane.showInputDialog (null, "Input your name please:",           "showInputDialog", JOptionPane.PLAIN_MESSAGE);*/        /*6  showInputDialog(Component parentComponent, Object message,           String title, int messageType,           Icon icon, Object[] selectionValues,          Object initialSelectionValue);  notice:this method return an Object class, not String;  *//*  inputMessage = JOptionPane.showInputDialog (null, "Order", "order", JOptionPane.ERROR_MESSAGE,          icon,possibleValues,          possibleValues[0]);*/        /*  Default:   parentComponent:null   message:"输入"   messageType:JOptionPane.QUESTION_MESSAGE   optionType:OK_CANCEL_OPTION  */        //-------------------------------------------------------  // Usage:  // method: static int showConformDialog(Xxx)  //-------------------------------------------------------    /*1  showConfirmDialog(Component parentComponent, Object message)  *///  confirmMessage = JOptionPane.showConfirmDialog (null, "Are you sure?");        /*2  showConfirmDialog(Component parentComponent, Object message, String title,         int optionType)  *///  JOptionPane.showConfirmDialog (null, "Are you sure?", "Comfirm Dialog",JOptionPane.YES_NO_OPTION);        /*3  showConfirmDialog(Component parentComponent, Object message, String title,        int optionType, int messageType)  *///  JOptionPane.showConfirmDialog(null, "Are you sure?", "Confirm Dialog", JOptionPane.OK_CANCEL_OPTION, JOptionPane.PLAIN_MESSAGE);          /*4  showConfirmDialog(Component parentComponent, Object message, String title,        int optionType, int messageType, Icon icon)  *///  JOptionPane.showConfirmDialog (null, "Are you sure?", "Confirm Dialog", JOptionPane.DEFAULT_OPTION, JOptionPane.WARNING_MESSAGE, icon);        /*  Default:   title:选择一个选项   messageType:JOptionPane.QUESTION_MESSAGE   optionType: JOptionPane.YES_NO_CANCEL_OPTION  */          //-------------------------------------------------------  // Usage:  // method:static int showMessageDialog(Xxx)  //-------------------------------------------------------    /*1  showMessageDialog(Component parentComponent, Object message)  *///  JOptionPane.showMessageDialog(null, "message1");        /*2  showMessageDialog(Component parentComponent, Object message,        String title, int messageType)  *///  JOptionPane.showMessageDialog (null, "message2", "message2", JOptionPane.INFORMATION_MESSAGE);        /*3  showMessageDialog(Component parentComponent, Object message,        String title, int messageType, Icon icon)  *///  JOptionPane.showMessageDialog (null, "message3","message3", JOptionPane.PLAIN_MESSAGE,icon);            /*  Default:   title:信息   messageType:JOptionPane.INFORMATION_MESSAGE   optionType:JOptionPane.OK_OPTION  */        //-----------------------------------------  // Usage:  // method:static int | showOptionDialog(Xxx);  //-----------------------------------------  /*Only 1  showOptionDialog(Component parentComponent, Object message,       String title, int optionType, int messageType,       Icon icon, Object[] options, Object initialValue)  */  JOptionPane.showOptionDialog (null, "OptionDialog","OptionDialog",         JOptionPane.DEFAULT_OPTION,JOptionPane.WARNING_MESSAGE,         icon, possibleValues, possibleValues[0]);         //----------------------------------------  // Other method  //----------------------------------------    //JDialog | createDialog(Component parentComponent, String title)      System.exit(0);  }}

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