path: root/java/openjdk6/files/icedtea/openjdk/8012617-arrayindexoutofbounds_linebreakmeasurer.patch

# HG changeset patch
# User prr
# Date 1382993769 0
#      Mon Oct 28 20:56:09 2013 +0000
# Node ID 150e0c3e95ce6869f8e7b42c6d8683817433e124
# Parent  9cfb9105241489a5fbc3fcfdea15a6aee15b2cfc
8012617: ArrayIndexOutOfBoundsException with some fonts using LineBreakMeasurer
Reviewed-by: bae, srl, omajid

diff -r 9cfb91052414 -r 150e0c3e95ce src/share/classes/sun/font/ExtendedTextSourceLabel.java
--- jdk/src/share/classes/sun/font/ExtendedTextSourceLabel.java	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/classes/sun/font/ExtendedTextSourceLabel.java	Mon Oct 28 20:56:09 2013 +0000
@@ -246,6 +246,10 @@
     float aw = 0f;
     float ah = cm.ascent + cm.descent;
 
+    if (charinfo == null || charinfo.length == 0) {
+        return new Rectangle2D.Float(al, at, aw, ah);
+    }
+
     boolean lineIsLTR = (source.getLayoutFlags() & 0x8) == 0;
     int rn = info.length - numvals;
     if (lineIsLTR) {
@@ -349,24 +353,42 @@
 
   public float getCharX(int index) {
     validate(index);
-    return getCharinfo()[l2v(index) * numvals + posx];
+    float[] charinfo = getCharinfo();
+    int idx = l2v(index) * numvals + posx;
+    if (charinfo == null || idx >= charinfo.length) {
+        return 0f;
+    } else {
+        return charinfo[idx];
+    }
   }
 
   public float getCharY(int index) {
     validate(index);
-    return getCharinfo()[l2v(index) * numvals + posy];
+    float[] charinfo = getCharinfo();
+    int idx = l2v(index) * numvals + posy;
+    if (charinfo == null || idx >= charinfo.length) {
+        return 0f;
+    } else {
+        return charinfo[idx];
+    }
   }
 
   public float getCharAdvance(int index) {
     validate(index);
-    return getCharinfo()[l2v(index) * numvals + advx];
+    float[] charinfo = getCharinfo();
+    int idx = l2v(index) * numvals + advx;
+    if (charinfo == null || idx >= charinfo.length) {
+        return 0f;
+    } else {
+        return charinfo[idx];
+    }
   }
 
   public Rectangle2D handleGetCharVisualBounds(int index) {
     validate(index);
     float[] charinfo = getCharinfo();
     index = l2v(index) * numvals;
-    if ((index+vish) >= charinfo.length) {
+    if (charinfo == null || (index+vish) >= charinfo.length) {
         return new Rectangle2D.Float();
     }
     return new Rectangle2D.Float(
@@ -462,7 +484,7 @@
       if (cidx >= charinfo.length) {
           break; // layout bailed for some reason
       }
-      float adv = charinfo[l2v(start) * numvals + advx];
+      float adv = charinfo[cidx];
       width -= adv;
     }
 
@@ -511,7 +533,13 @@
       //    }
       //}
 
-      return getCharinfo()[v * numvals + advx] != 0;
+      int idx = v * numvals + advx;
+      float[] charinfo = getCharinfo();
+      if (charinfo == null || idx >= charinfo.length) {
+          return false;
+      } else {
+          return charinfo[idx] != 0;
+      }
   }
 
   private final float[] getCharinfo() {
@@ -603,6 +631,9 @@
     */
 
     int numGlyphs = gv.getNumGlyphs();
+    if (numGlyphs == 0) {
+        return glyphinfo;
+    }
     int[] indices = gv.getGlyphCharIndices(0, numGlyphs, null);
 
     boolean DEBUG = false;
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/classes/sun/font/GlyphLayout.java
--- jdk/src/share/classes/sun/font/GlyphLayout.java	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/classes/sun/font/GlyphLayout.java	Mon Oct 28 20:56:09 2013 +0000
@@ -76,9 +76,12 @@
 import java.awt.geom.Point2D;
 import java.util.ArrayList;
 import java.util.concurrent.ConcurrentHashMap;
+import java.util.logging.Logger;
 
 import static java.lang.Character.*;
 
+import sun.java2d.SunGraphicsEnvironment;
+
 public final class GlyphLayout {
     // data for glyph vector
     private GVData _gvdata;
@@ -461,7 +464,12 @@
                     break;
                 }
                 catch (IndexOutOfBoundsException e) {
-                    _gvdata.grow();
+                    if (_gvdata._count >=0) {
+                        _gvdata.grow();
+                    }
+                }
+                if (_gvdata._count < 0) {
+                    break;
                 }
             }
         }
@@ -470,7 +478,19 @@
         //            _gvdata.adjustPositions(txinfo.invdtx);
         //        }
 
-        StandardGlyphVector gv = _gvdata.createGlyphVector(font, frc, result);
+        // If layout fails (negative glyph count) create an un-laid out GV instead.
+        // ie default positions. This will be a lot better than the alternative of
+        // a complete blank layout.
+        StandardGlyphVector gv;
+        if (_gvdata._count < 0) {
+            gv = new StandardGlyphVector(font, text, offset, count, frc);
+            if (SunGraphicsEnvironment.debugFonts) {
+               Logger.getLogger("sun.java2d").warning("OpenType layout failed on font: " +
+						      font);
+            }
+        } else {
+            gv = _gvdata.createGlyphVector(font, frc, result);
+        }
         //        System.err.println("Layout returns: " + gv);
         return gv;
     }
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/ContextualSubstSubtables.cpp
--- jdk/src/share/native/sun/font/layout/ContextualSubstSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/ContextualSubstSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -218,6 +218,9 @@
 
     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
     le_int32 coverageIndex = getGlyphCoverage(lookupProcessor->getReference(), glyph, success);
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
 
     if (coverageIndex >= 0) {
         le_uint16 srSetCount = SWAPW(subRuleSetCount);
@@ -267,6 +270,9 @@
 
     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
     le_int32 coverageIndex = getGlyphCoverage(lookupProcessor->getReference(), glyph, success);
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
 
     if (coverageIndex >= 0) {
         const ClassDefinitionTable *classDefinitionTable =
@@ -395,6 +401,9 @@
 
     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
     le_int32 coverageIndex = getGlyphCoverage(lookupProcessor->getReference(), glyph, success);
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
 
     if (coverageIndex >= 0) {
         le_uint16 srSetCount = SWAPW(chainSubRuleSetCount);
@@ -466,6 +475,9 @@
 
     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
     le_int32 coverageIndex = getGlyphCoverage(lookupProcessor->getReference(), glyph, success);
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
 
     if (coverageIndex >= 0) {
         const ClassDefinitionTable *backtrackClassDefinitionTable =
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/CursiveAttachmentSubtables.cpp
--- jdk/src/share/native/sun/font/layout/CursiveAttachmentSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/CursiveAttachmentSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -45,7 +45,7 @@
     le_int32  coverageIndex = getGlyphCoverage(base, glyphID, success);
     le_uint16 eeCount       = SWAPW(entryExitCount);
 
-    if (coverageIndex < 0 || coverageIndex >= eeCount) {
+    if (coverageIndex < 0 || coverageIndex >= eeCount || LE_FAILURE(success)) {
         glyphIterator->setCursiveGlyph();
         return 0;
     }
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/ExtensionSubtables.cpp
--- jdk/src/share/native/sun/font/layout/ExtensionSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/ExtensionSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -44,10 +44,10 @@
 #define READ_LONG(code) (le_uint32)((SWAPW(*(le_uint16*)&code) << 16) + SWAPW(*(((le_uint16*)&code) + 1)))
 
 // FIXME: should look at the format too... maybe have a sub-class for it?
-le_uint32 ExtensionSubtable::process(const LookupProcessor *lookupProcessor, le_uint16 lookupType,
+le_uint32 ExtensionSubtable::process(const LEReferenceTo<ExtensionSubtable> &thisRef,
+                                     const LookupProcessor *lookupProcessor, le_uint16 lookupType,
                                       GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const
 {
-    const LEReferenceTo<ExtensionSubtable> thisRef(lookupProcessor->getReference(), success); // create a reference to this
 
     if (LE_FAILURE(success)) {
         return 0;
@@ -57,7 +57,7 @@
 
     if (elt != lookupType) {
         le_uint32 extOffset = READ_LONG(extensionOffset);
-        LEReferenceTo<LookupSubtable> subtable(thisRef, success, extOffset);
+        LEReferenceTo<LookupSubtable> subtable(thisRef, success,  extOffset);
 
         if(LE_SUCCESS(success)) {
           return lookupProcessor->applySubtable(subtable, elt, glyphIterator, fontInstance, success);
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/ExtensionSubtables.h
--- jdk/src/share/native/sun/font/layout/ExtensionSubtables.h	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/ExtensionSubtables.h	Mon Oct 28 20:56:09 2013 +0000
@@ -52,7 +52,8 @@
     le_uint16 extensionLookupType;
     le_uint32 extensionOffset;
 
-    le_uint32 process(const LookupProcessor *lookupProcessor, le_uint16 lookupType,
+    le_uint32 process(const LEReferenceTo<ExtensionSubtable> &extRef,
+                      const LookupProcessor *lookupProcessor, le_uint16 lookupType,
                       GlyphIterator *glyphIterator, const LEFontInstance *fontInstance, LEErrorCode& success) const;
 };
 
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/GlyphPosnLookupProc.cpp
--- jdk/src/share/native/sun/font/layout/GlyphPosnLookupProc.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/GlyphPosnLookupProc.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -168,7 +168,7 @@
     {
         LEReferenceTo<ExtensionSubtable> subtable(lookupSubtable, success);
 
-        delta = subtable->process(this, lookupType, glyphIterator, fontInstance, success);
+        delta = subtable->process(subtable, this, lookupType, glyphIterator, fontInstance, success);
         break;
     }
 
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/GlyphSubstLookupProc.cpp
--- jdk/src/share/native/sun/font/layout/GlyphSubstLookupProc.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/GlyphSubstLookupProc.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -139,7 +139,7 @@
     {
         const LEReferenceTo<ExtensionSubtable> subtable(lookupSubtable, success);
 
-        delta = subtable->process(this, lookupType, glyphIterator, fontInstance, success);
+        delta = subtable->process(subtable, this, lookupType, glyphIterator, fontInstance, success);
         break;
     }
 
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/LigatureSubstSubtables.cpp
--- jdk/src/share/native/sun/font/layout/LigatureSubstSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/LigatureSubstSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -45,6 +45,10 @@
     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
     le_int32 coverageIndex = getGlyphCoverage(base, glyph, success);
 
+    if (LE_FAILURE(success)) {
+      return 0;
+    }
+
     if (coverageIndex >= 0) {
         Offset ligSetTableOffset = SWAPW(ligSetTableOffsetArray[coverageIndex]);
         const LigatureSetTable *ligSetTable = (const LigatureSetTable *) ((char *) this + ligSetTableOffset);
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/MarkToBasePosnSubtables.cpp
--- jdk/src/share/native/sun/font/layout/MarkToBasePosnSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/MarkToBasePosnSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -56,6 +56,10 @@
     LEGlyphID markGlyph = glyphIterator->getCurrGlyphID();
     le_int32 markCoverage = getGlyphCoverage(base, (LEGlyphID) markGlyph, success);
 
+    if (LE_FAILURE(success)) {
+      return 0;
+    }
+
     if (markCoverage < 0) {
         // markGlyph isn't a covered mark glyph
         return 0;
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/MarkToLigaturePosnSubtables.cpp
--- jdk/src/share/native/sun/font/layout/MarkToLigaturePosnSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/MarkToLigaturePosnSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -55,6 +55,10 @@
     LEGlyphID markGlyph = glyphIterator->getCurrGlyphID();
     le_int32 markCoverage = getGlyphCoverage(base, (LEGlyphID) markGlyph, success);
 
+    if (LE_FAILURE(success)) {
+      return 0;
+    }
+
     if (markCoverage < 0) {
         // markGlyph isn't a covered mark glyph
         return 0;
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/MarkToMarkPosnSubtables.cpp
--- jdk/src/share/native/sun/font/layout/MarkToMarkPosnSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/MarkToMarkPosnSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -56,6 +56,10 @@
     LEGlyphID markGlyph = glyphIterator->getCurrGlyphID();
     le_int32 markCoverage = getGlyphCoverage(base, (LEGlyphID) markGlyph, success);
 
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
+
     if (markCoverage < 0) {
         // markGlyph isn't a covered mark glyph
         return 0;
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/MultipleSubstSubtables.cpp
--- jdk/src/share/native/sun/font/layout/MultipleSubstSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/MultipleSubstSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -61,6 +61,10 @@
     le_int32 coverageIndex = getGlyphCoverage(base, glyph, success);
     le_uint16 seqCount = SWAPW(sequenceCount);
 
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
+
     if (coverageIndex >= 0 && coverageIndex < seqCount) {
         Offset sequenceTableOffset = SWAPW(sequenceTableOffsetArray[coverageIndex]);
         const SequenceTable *sequenceTable = (const SequenceTable *) ((char *) this + sequenceTableOffset);
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/PairPositioningSubtables.cpp
--- jdk/src/share/native/sun/font/layout/PairPositioningSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/PairPositioningSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -126,6 +126,11 @@
 {
     LEGlyphID firstGlyph = glyphIterator->getCurrGlyphID();
     le_int32 coverageIndex = getGlyphCoverage(base, firstGlyph, success);
+
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
+
     GlyphIterator tempIterator(*glyphIterator);
 
     if (coverageIndex >= 0 && glyphIterator->next()) {
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/SinglePositioningSubtables.cpp
--- jdk/src/share/native/sun/font/layout/SinglePositioningSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/SinglePositioningSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -70,6 +70,9 @@
 {
     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
     le_int32 coverageIndex = getGlyphCoverage(base, glyph, success);
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
 
     if (coverageIndex >= 0) {
         valueRecord.adjustPosition(SWAPW(valueFormat), (const char *) this, *glyphIterator, fontInstance);
@@ -84,6 +87,9 @@
 {
     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
     le_int16 coverageIndex = (le_int16) getGlyphCoverage(base, glyph, success);
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
 
     if (coverageIndex >= 0) {
         valueRecordArray[0].adjustPosition(coverageIndex, SWAPW(valueFormat), (const char *) this, *glyphIterator, fontInstance);
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/SingleSubstitutionSubtables.cpp
--- jdk/src/share/native/sun/font/layout/SingleSubstitutionSubtables.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/SingleSubstitutionSubtables.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -69,6 +69,9 @@
 {
     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
     le_int32 coverageIndex = getGlyphCoverage(base, glyph, success);
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
 
     if (coverageIndex >= 0) {
         TTGlyphID substitute = ((TTGlyphID) LE_GET_GLYPH(glyph)) + SWAPW(deltaGlyphID);
@@ -87,6 +90,9 @@
 {
     LEGlyphID glyph = glyphIterator->getCurrGlyphID();
     le_int32 coverageIndex = getGlyphCoverage(base, glyph, success);
+    if (LE_FAILURE(success)) {
+        return 0;
+    }
 
     if (coverageIndex >= 0) {
         TTGlyphID substitute = SWAPW(substituteArray[coverageIndex]);
diff -r 9cfb91052414 -r 150e0c3e95ce src/share/native/sun/font/layout/SunLayoutEngine.cpp
--- jdk/src/share/native/sun/font/layout/SunLayoutEngine.cpp	Tue Jul 16 21:00:34 2013 +0400
+++ jdk/src/share/native/sun/font/layout/SunLayoutEngine.cpp	Mon Oct 28 20:56:09 2013 +0000
@@ -203,16 +203,19 @@
   getFloat(env, pt, x, y);
   jboolean rtl = (typo_flags & TYPO_RTL) != 0;
   int glyphCount = engine->layoutChars(chars, start - min, limit - start, len, rtl, x, y, success);
-  //   fprintf(stderr, "sle nl len %d -> gc: %d\n", len, glyphCount); fflush(stderr);
+    // fprintf(stderr, "sle nl len %d -> gc: %d\n", len, glyphCount); fflush(stderr);
 
   engine->getGlyphPosition(glyphCount, x, y, success);
 
-  //  fprintf(stderr, "layout glyphs: %d x: %g y: %g\n", glyphCount, x, y); fflush(stderr);
-
-  if (putGV(env, gmask, baseIndex, gvdata, engine, glyphCount)) {
-    // !!! hmmm, could use current value in positions array of GVData...
-    putFloat(env, pt, x, y);
-  }
+   // fprintf(stderr, "layout glyphs: %d x: %g y: %g\n", glyphCount, x, y); fflush(stderr);
+   if (LE_FAILURE(success)) {
+       env->SetIntField(gvdata, gvdCountFID, -1); // flag failure
+   } else {
+      if (putGV(env, gmask, baseIndex, gvdata, engine, glyphCount)) {
+        // !!! hmmm, could use current value in positions array of GVData...
+        putFloat(env, pt, x, y);
+      }
+   }
 
   if (chars != buffer) {
     free(chars);
diff -r 9cfb91052414 -r 150e0c3e95ce test/java/awt/font/LineBreakMeasurer/AllFontsLBM.java
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ jdk/test/java/awt/font/LineBreakMeasurer/AllFontsLBM.java	Mon Oct 28 20:56:09 2013 +0000
@@ -0,0 +1,78 @@
+/*
+ * Copyright (c) 2013, Oracle and/or its affiliates. All rights reserved.
+ * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
+ *
+ * This code is free software; you can redistribute it and/or modify it
+ * under the terms of the GNU General Public License version 2 only, as
+ * published by the Free Software Foundation.
+ *
+ * This code is distributed in the hope that it will be useful, but WITHOUT
+ * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
+ * FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+ * version 2 for more details (a copy is included in the LICENSE file that
+ * accompanied this code).
+ *
+ * You should have received a copy of the GNU General Public License version
+ * 2 along with this work; if not, write to the Free Software Foundation,
+ * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
+ *
+ * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
+ * or visit www.oracle.com if you need additional information or have any
+ * questions.
+ */
+
+/*
+ * @test
+ * @bug 8012617
+ * @summary ArrayIndexOutOfBoundsException in LineBreakMeasurer
+ */
+
+import java.awt.*;
+import java.awt.image.*;
+import java.awt.font.*;
+import java.awt.geom.*;
+import java.text.*;
+import java.util.Hashtable;
+
+public class AllFontsLBM {
+
+    public static void main(String[] args) {
+        Font[] allFonts = GraphicsEnvironment.getLocalGraphicsEnvironment().getAllFonts();
+        for (int i=0;i<allFonts.length; i++) {
+           try {
+           Font f = allFonts[i].deriveFont(Font.PLAIN, 20);
+
+           if ( f.getFontName().startsWith("HiraKaku") ) {
+               continue;
+           }
+
+           System.out.println("Try : " + f.getFontName());
+           System.out.flush();
+           breakLines(f);
+           } catch (Exception e) {
+              System.out.println(allFonts[i]);
+           }
+        }
+    }
+
+     static void breakLines(Font font) {
+        AttributedString vanGogh = new AttributedString(
+        "Many people believe that Vincent van Gogh painted his best works " +
+        "during the two-year period he spent in Provence. Here is where he " +
+        "painted The Starry Night--which some consider to be his greatest " +
+        "work of all. However, as his artistic brilliance reached new " +
+        "heights in Provence, his physical and mental health plummeted. ",
+        new Hashtable());
+        vanGogh.addAttribute(TextAttribute.FONT, font);
+        BufferedImage bi = new BufferedImage(100, 100, BufferedImage.TYPE_INT_RGB);
+        Graphics2D g2d = bi.createGraphics();
+        AttributedCharacterIterator aci = vanGogh.getIterator();
+        FontRenderContext frc = new FontRenderContext(null, false, false);
+        LineBreakMeasurer lbm = new LineBreakMeasurer(aci, frc);
+        lbm.setPosition(aci.getBeginIndex());
+        while (lbm.getPosition() < aci.getEndIndex()) {
+             lbm.nextLayout(100f);
+        }
+
+    }
+}