用java编写记事本时(AWT 技术)，文字输入区域是用面版，还是用TextArea

Question

panel不能用于文字输入，应该是用TextArea

Answer 1

可以画字DrawString() 吗？ 这样可以调字体大小颜色了

Answer 2

Find.html
<title>Find</title>
<hr>
<applet code="Find.class" width=250 height=195>
</applet>
<hr>Find.java
import java.applet.Applet;import java.awt.BorderLayout;
import java.awt.Button;
import java.awt.GridLayout;
import java.awt.Label;
import java.awt.Panel;
import java.awt.TextArea;
import java.awt.TextField;
import java.awt.event.ActionEvent;
import java.awt.event.ActionListener;public class Find extends Applet
{
    TextArea editor = new TextArea(5,20);
    Label findLabel = new Label("find:"),changeLabel = new Label("change:");    TextField findField = new TextField(5),changeField = new TextField(5);    Button findButton = new Button("Find"),changeFindButton = new Button("Change & Find"),changeButton = new Button("Change");    public void init()
    {
        Panel north = new Panel(),center = new Panel(),south = new Panel();        north.add(editor);        center.setLayout(new GridLayout(2,2));
        center.add(findLabel);
        center.add(findField);
        center.add(changeLabel);
        center.add(changeField);        south.add(findButton);
        south.add(changeFindButton);
        south.add(changeButton);        setLayout(new BorderLayout());
        add(north,"North");
        add(center,"Center");
        add(south,"South");        findButton.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent event)
            {
                findNext(findField.getText());
            }
        });        changeButton.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent event)
            {
                replace(changeField.getText());
            }
        });        changeFindButton.addActionListener(new ActionListener()
        {
            public void actionPerformed(ActionEvent event)
            {
                int start = editor.getSelectionStart(),
                    end = editor.getSelectionEnd();                if(start != end)
                {
                    replace(changeField.getText());                }
                findNext(findField.getText());
            }
        });
    }    void replace(String change)
    {
        int start = editor.getSelectionStart(),end = editor.getSelectionEnd();        if(start != end)
        {
            editor.replaceRange(change,start,end);
        }
    }    void findNext(String find)
    {
        String edit = editor.getText();
        int start = editor.getSelectionStart(),end = editor.getSelectionEnd(),index = -1;        index = edit.indexOf(find,start + 1);        if(index == -1 && start != 0)
        {
            index = edit.indexOf(find);
        }
        if(index != -1)
        {
            editor.setSelectionStart(index);
            editor.setSelectionEnd(index + find.length());
        }
    }
}