packagenet.mindview.util;
importjava.awt.*;
importjava.awt.event.*;
publicclassEogextendsFrame{
privatePanelpanel;
privateLabellabel;
privateString[]names={\"7\",\"8\",\"9\",\"\",\"4\",\"5\",\"6\",\"-\",\"1\",
\"2\",\"3\",\"*\",\"0\",\".\",\"=\",\"/\"
};
privateButton[]buttons=newButton[16];
publicEog(Stringtitle){
super(title);
label=newLabel();
panel=newPanel();
panel.setLayout(newGridLayout(4,4));
add(label,\"North\");
add(panel,\"Center\");
for(inti=0;ibuttons.length;i){
buttons=newButton(names);
panel.add(buttons);
}
pack();
setVisible(true);
}
publicstaticvoidmain(Stringargs[]){
newEog(\"hello\");
}
}
这里面的pack（）是什么意思
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