35 lines
1011 B
Java
35 lines
1011 B
Java
// ui/TextArea.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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// Using the JTextArea control.
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import javax.swing.*;
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import java.awt.*;
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import java.util.*;
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import onjava.*;
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import static onjava.SwingConsole.*;
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public class TextArea extends JFrame {
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private JButton
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b = new JButton("Add Data"),
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c = new JButton("Clear Data");
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private JTextArea t = new JTextArea(20, 40);
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private Map<String,String> m = new HashMap<>();
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public TextArea() {
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// Use up all the data:
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m.putAll(Countries.capitals());
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b.addActionListener(e -> {
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for(Map.Entry me : m.entrySet())
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t.append(me.getKey() + ": "+ me.getValue()+"\n");
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});
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c.addActionListener(e -> t.setText(""));
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setLayout(new FlowLayout());
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add(new JScrollPane(t));
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add(b);
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add(c);
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}
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public static void main(String[] args) {
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run(new TextArea(), 475, 425);
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}
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}
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