Schriftgrößenwahl implementiert

src/main/java/ChatGUI.java

@@ -1,6 +1,7 @@
 import java.awt.BorderLayout;
 import java.awt.Color;
 import java.awt.Dimension;
+import java.awt.Font;
 import java.awt.Toolkit;
 import java.awt.event.ActionEvent;
 import java.awt.event.ActionListener;
@@ -64,6 +65,9 @@ public class ChatGUI implements ActionListener {
 		blue.addActionListener(this);
 		black.addActionListener(this);
 		green.addActionListener(this);
+		small.addActionListener(this);
+		medium.addActionListener(this);
+		large.addActionListener(this);
 
 		exit.addActionListener(this);
 
@@ -112,5 +116,17 @@ public class ChatGUI implements ActionListener {
 		} else if (e.getSource() == green) {
 			outputTextArea.setForeground(Color.GREEN);
 		}
+        	if(e.getSource() == small) {
+                outputTextArea.setFont(outputTextArea.getFont().deriveFont(Font.PLAIN, 12));
+        	}
+        	if(e.getSource() == medium) {
+                outputTextArea.setFont(outputTextArea.getFont().deriveFont(Font.PLAIN, 16));
+        	}
+        	if(e.getSource() == large) {
+                outputTextArea.setFont(outputTextArea.getFont().deriveFont(Font.PLAIN, 20));
+        	}
+
+
+
 	}
 }