//: gui/TextArea.java // Using the JTextArea control. import javax.swing.*; import java.awt.*; import java.util.*; import net.mindview.util.*; import static net.mindview.util.SwingConsole.*; public class TextArea extends JFrame { private JButton b = new JButton("Add Data"), c = new JButton("Clear Data"); private JTextArea t = new JTextArea(20, 40); private Map m = new HashMap<>(); public TextArea() { // Use up all the data: m.putAll(Countries.capitals()); b.addActionListener(e -> { for(Map.Entry me : m.entrySet()) t.append(me.getKey() + ": "+ me.getValue()+"\n"); }); c.addActionListener(e -> t.setText("")); setLayout(new FlowLayout()); add(new JScrollPane(t)); add(b); add(c); } public static void main(String[] args) { run(new TextArea(), 475, 425); } } ///:~