MenuBar mbMainMenuBar; Menu mnFile; Menu

Листинг 2

. Файл DirectFile.java
import java.awt.*; import java.io.*; import java.util.*;
public class DirectFile { public static void main(String args[]) { MainFrameWnd frame = new MainFrameWnd("MenuApp");
frame.setSize( frame.getInsets().left + frame.getInsets().right + 320, frame.getInsets().top + frame.getInsets().bottom + 240);
frame.show();
} }
class MainFrameWnd extends Frame { MenuBar mbMainMenuBar; Menu mnFile; Menu mnHelp; boolean fDBEmpty = true;
public MainFrameWnd(String sTitle) { super(sTitle);

setSize(400, 200);
setBackground(Color.yellow);
setForeground(Color.black);

setLayout(new FlowLayout());

mbMainMenuBar = new MenuBar();
mnFile = new Menu("File");

mnFile.add("New...");
mnFile.add("View records...");
mnFile.add("-");
mnFile.add("Exit");

mnHelp = new Menu("Help");

mnHelp.add("Content");
mnHelp.add("-");
mnHelp.add("About");

mbMainMenuBar.add(mnFile);
mbMainMenuBar.add(mnHelp);

setMenuBar(mbMainMenuBar);
}
public void paint(Graphics g) { g.setFont(new Font("Helvetica", Font.PLAIN, 12));
g.drawString("Frame window", 10, 70);
super.paint(g);
}
public boolean handleEvent(Event evt) { if(evt.id == Event.WINDOW_DESTROY) { setVisible(false);
System.exit(0);
return true; } else return super.handleEvent(evt);
}
public boolean action(Event evt, Object obj) { MenuItem mnItem; if(evt.target instanceof MenuItem) { mnItem = (MenuItem)evt.target;
if(obj.equals("Exit")) { System.exit(0);
}
else if(obj.equals("New...")) { if(fDBEmpty) { SimpleDBMS db = new SimpleDBMS( "dbtest.idx", "dbtest.dat");

db.AddRecord("Ivanov", 1000);
db.AddRecord("Petrov", 2000);
db.AddRecord("Sidoroff", 3000);

db.close();

fDBEmpty = false;
MessageBox mbox; mbox = new MessageBox( "Database created", this, "Information", true);
mbox.show();
} }
else if(obj.equals("View records...")) { SimpleDBMS db = new SimpleDBMS( "dbtest.idx", "dbtest.dat");
String szRecords;

Содержание раздела

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