diff --git a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/Arial.java b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/Arial.java
index 0ab876fb9..c34cca4b9 100644
--- a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/Arial.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/Arial.java
@@ -29,7 +29,7 @@
 
 package org.antlr.v4.runtime.tree.gui;
 
-public class Arial extends FontMetrics {
+public class Arial extends BasicFontMetrics {
 	{
 		maxCharHeight = 781;
         widths[32] = 277; // space
diff --git a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/ArialBlack.java b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/ArialBlack.java
index d3069ef8b..8235ab818 100644
--- a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/ArialBlack.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/ArialBlack.java
@@ -29,7 +29,7 @@
 
 package org.antlr.v4.runtime.tree.gui;
 
-public class ArialBlack extends FontMetrics {
+public class ArialBlack extends BasicFontMetrics {
     {
 		maxCharHeight = 770;
         widths[32] = 333; // space
diff --git a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/FontMetrics.java b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/BasicFontMetrics.java
similarity index 98%
rename from runtime/Java/src/org/antlr/v4/runtime/tree/gui/FontMetrics.java
rename to runtime/Java/src/org/antlr/v4/runtime/tree/gui/BasicFontMetrics.java
index 054beb162..f45864ae6 100644
--- a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/FontMetrics.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/BasicFontMetrics.java
@@ -67,7 +67,7 @@ package org.antlr.v4.runtime.tree.gui;
 
  	Units are 1000th of an 'em'.
  */
-public abstract class FontMetrics {
+public abstract class BasicFontMetrics {
 	protected int maxCharHeight;
 	protected int[] widths = new int[128];
 
diff --git a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/CourierNew.java b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/CourierNew.java
index b4dc5ad14..c483b0043 100644
--- a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/CourierNew.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/CourierNew.java
@@ -29,7 +29,7 @@
 
 package org.antlr.v4.runtime.tree.gui;
 
-public class CourierNew extends FontMetrics {
+public class CourierNew extends BasicFontMetrics {
 	{
 		maxCharHeight = 678;
 		for (int i=0; i<128; i++) widths[i] = 600;
diff --git a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/PostScriptDocument.java b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/PostScriptDocument.java
index 2d930a9a3..7ab69a833 100644
--- a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/PostScriptDocument.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/PostScriptDocument.java
@@ -33,7 +33,7 @@ public class PostScriptDocument {
 	protected int boundingBoxWidth;
 	protected int boundingBoxHeight;
 
-	protected FontMetrics fontMetrics;
+	protected BasicFontMetrics fontMetrics;
 	protected String fontName;
 	protected int fontSize = 12;
 	protected double lineWidth = 0.3;
@@ -98,7 +98,7 @@ public class PostScriptDocument {
 		this.fontSize = fontSize;
 		try {
 			Class c = Class.forName("org.antlr.v4.runtime.tree.gui." + fontName);
-			this.fontMetrics = (FontMetrics)c.newInstance();
+			this.fontMetrics = (BasicFontMetrics)c.newInstance();
 		}
 		catch (Exception e) {
 			throw new UnsupportedOperationException("No font metrics for "+fontName);
diff --git a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TimesNewRoman.java b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TimesNewRoman.java
index 52c18d281..2ca20c520 100644
--- a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TimesNewRoman.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TimesNewRoman.java
@@ -29,7 +29,7 @@
 
 package org.antlr.v4.runtime.tree.gui;
 
-public class TimesNewRoman extends FontMetrics {
+public class TimesNewRoman extends BasicFontMetrics {
     {
 		maxCharHeight = 717;
         widths[32] = 250; // space
diff --git a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TreePostScriptGenerator.java b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TreePostScriptGenerator.java
index 6876bf521..debf0730d 100644
--- a/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TreePostScriptGenerator.java
+++ b/runtime/Java/src/org/antlr/v4/runtime/tree/gui/TreePostScriptGenerator.java
@@ -163,7 +163,7 @@ public class TreePostScriptGenerator {
 		t.addChild(b);
 		b.addChild(c);
 		b.addChild(d);
-		TreePostScriptGenerator psgen = new TreePostScriptGenerator(null, t, "TimesNewRoman", 11);
+		TreePostScriptGenerator psgen = new TreePostScriptGenerator(null, t, "CourierNew", 11);
 		System.out.println(psgen.getPS());
 	}
 }