8287761: Make the logging of J2DBench stable

Reviewed-by: aghaisas, prr

src/demo/share/java2d/J2DBench/src/j2dbench/Result.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2018, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2022, Oracle and/or its affiliates. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -40,11 +40,11 @@
 
 package j2dbench;
 
-import java.util.Vector;
-import java.util.Hashtable;
-import java.util.Enumeration;
 import java.io.PrintWriter;
 import java.util.HashMap;
+import java.util.Iterator;
+import java.util.LinkedHashMap;
+import java.util.Vector;
 
 public class Result {
     public static final int RATE_UNKNOWN    = 0;
@@ -243,7 +243,7 @@ public class Result {
     int repsPerRun;
     int unitsPerRep;
     Vector times;
-    Hashtable modifiers;
+    LinkedHashMap modifiers;
     Throwable error;
 
     public Result(Test test) {
@@ -277,7 +277,7 @@ public class Result {
         this.error = t;
     }
 
-    public void setModifiers(Hashtable modifiers) {
+    public void setModifiers(LinkedHashMap modifiers) {
         this.modifiers = modifiers;
     }
 
@@ -297,7 +297,7 @@ public class Result {
         return ((long) getRepsPerRun()) * ((long) getUnitsPerRep());
     }
 
-    public Hashtable getModifiers() {
+    public LinkedHashMap getModifiers() {
         return modifiers;
     }
 
@@ -423,11 +423,11 @@ public class Result {
             System.out.println(test+" averaged "+getAverageString());
         }
         if (true) {
-            Enumeration enum_ = modifiers.keys();
+            Iterator iter_ = modifiers.keySet().iterator();
             System.out.print("    with");
             String sep = " ";
-            while (enum_.hasMoreElements()) {
-                Modifier mod = (Modifier) enum_.nextElement();
+            while (iter_.hasNext()) {
+                Modifier mod = (Modifier) iter_.next();
                 Object v = modifiers.get(mod);
                 System.out.print(sep);
                 System.out.print(mod.getAbbreviatedModifierDescription(v));
@@ -442,9 +442,9 @@ public class Result {
                    "num-reps=\""+getRepsPerRun()+"\" "+
                    "num-units=\""+getUnitsPerRep()+"\" "+
                    "name=\""+test.getTreeName()+"\">");
-        Enumeration enum_ = modifiers.keys();
-        while (enum_.hasMoreElements()) {
-            Modifier mod = (Modifier) enum_.nextElement();
+        Iterator iter_ = modifiers.keySet().iterator();
+        while (iter_.hasNext()) {
+            Modifier mod = (Modifier) iter_.next();
             Object v = modifiers.get(mod);
             String val = mod.getModifierValueName(v);
             pw.println("    <option "+

src/demo/share/java2d/J2DBench/src/j2dbench/TestEnvironment.java

@@ -1,5 +1,5 @@
 /*
- * Copyright (c) 2002, 2011, Oracle and/or its affiliates. All rights reserved.
+ * Copyright (c) 2002, 2022, Oracle and/or its affiliates. All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
  * modification, are permitted provided that the following conditions
@@ -40,15 +40,15 @@
 
 package j2dbench;
 
+import java.awt.AlphaComposite;
 import java.awt.Canvas;
-import java.awt.Image;
+import java.awt.Color;
+import java.awt.Dimension;
 import java.awt.Graphics;
 import java.awt.Graphics2D;
-import java.awt.Dimension;
-import java.awt.AlphaComposite;
-import java.awt.Color;
+import java.awt.Image;
 import java.awt.Toolkit;
-import java.util.Hashtable;
+import java.util.LinkedHashMap;
 
 import j2dbench.tests.GraphicsTests;
 
@@ -105,12 +105,12 @@ public class TestEnvironment implements Node.Visitor {
     Image srcImage;
     boolean stopped;
     ResultSet results;
-    Hashtable modifiers;
+    LinkedHashMap modifiers;
     Timer timer;
 
     public TestEnvironment() {
         results = new ResultSet();
-        modifiers = new Hashtable();
+        modifiers = new LinkedHashMap();
         timer = Timer.getImpl();
     }
 
@@ -246,8 +246,8 @@ public class TestEnvironment implements Node.Visitor {
         modifiers.remove(o);
     }
 
-    public Hashtable getModifiers() {
-        return (Hashtable) modifiers.clone();
+    public LinkedHashMap getModifiers() {
+        return (LinkedHashMap) modifiers.clone();
     }
 
     public void record(Result result) {