SwingCodeExamplesNB as a Maven Netbeans Project

SwingCodeExamplesNB/src/main/java/javateaching/leanconsole/LeanConsole.java

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+/*
+ * To change this license header, choose License Headers in Project Properties.
+ * To change this template file, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package javateaching.leanconsole;
+
+import java.awt.BorderLayout;
+import javax.swing.JPanel;
+import javax.swing.JScrollPane;
+import javax.swing.JTextArea;
+
+/**
+ *
+ * @author paul
+ */
+public class LeanConsole extends JPanel
+{
+    private JTextArea textarea = new JTextArea();
+    
+    public LeanConsole()
+    {
+        this.setLayout(new BorderLayout());
+        JScrollPane scroll = new JScrollPane(textarea);
+        this.add(scroll,BorderLayout.CENTER);
+        textarea.setLineWrap(true); // otherwise everything is on one line
+        textarea.setEditable(false); // otherwise people can type over the text
+    }
+    
+    public void print(String text)
+    {
+        String currentText = this.getTextarea().getText();
+        currentText += text;
+        this.getTextarea().setText(currentText);
+        this.getTextarea().setCaretPosition(this.getTextarea().getDocument().getLength());
+    }
+    
+    public void println(String text)
+    {
+        this.print(text+System.getProperty("line.separator"));
+    }
+    
+    public void clear()
+    {
+        this.getTextarea().setText("");
+    }
+
+    public JTextArea getTextarea() {
+        return textarea;
+    }   
+}
+