diff --git a/src/main/java/com/alibaba/fastjson/parser/JSONLexer.java b/src/main/java/com/alibaba/fastjson/parser/JSONLexer.java
index 5ee6c4153..639db04d1 100644
--- a/src/main/java/com/alibaba/fastjson/parser/JSONLexer.java
+++ b/src/main/java/com/alibaba/fastjson/parser/JSONLexer.java
@@ -256,19 +256,86 @@ public final class JSONLexer {
                     next();
                     break;
                 case 't': // true
-                    scanTrue();
-                    return;
+                {
+                    if (text.startsWith("true", bp)) {
+                        bp += 4;
+                        ch = charAt(bp);
+
+                        if (ch == ' ' //
+                                || ch == ',' //
+                                || ch == '}' //
+                                || ch == ']' //
+                                || ch == '\n' //
+                                || ch == '\r' //
+                                || ch == '\t' //
+                                || ch == EOI //
+                                || ch == '\f' //
+                                || ch == '\b' //
+                                || ch == ':') {
+                            token = JSONToken.TRUE;
+                            return;
+                        }
+                    }
+                    throw new JSONException("scan true error");
+                }
                 case 'T': // treeSet
                 case 'S': // set
                 case 'u': //undefined
                     scanIdent();
                     return;
                 case 'f': // false
-                    scanFalse();
-                    return;
+                {
+                    if (text.startsWith("false", bp)) {
+                        bp += 5;
+                        ch = charAt(bp);
+
+                        if (ch == ' '//
+                                || ch == ','//
+                                || ch == '}'//
+                                || ch == ']'//
+                                || ch == '\n'//
+                                || ch == '\r'//
+                                || ch == '\t'//
+                                || ch == EOI//
+                                || ch == '\f'//
+                                || ch == '\b'//
+                                || ch == ':') {
+                            token = JSONToken.FALSE;
+                            return;
+                        }
+                    }
+                    throw new JSONException("scan false error");
+                }
                 case 'n': // new,null
-                    scanNullOrNew();
-                    return;
+                {
+                    int token = 0;
+                    if (text.startsWith("null", bp)) {
+                        bp += 4;
+                        token = JSONToken.NULL;
+                    } else if (text.startsWith("new", bp)) {
+                        bp += 3;
+                        token = JSONToken.NEW;
+                    }
+
+                    if (token != 0) {
+                        ch = charAt(bp);
+                        if (ch == ' ' //
+                                || ch == ',' //
+                                || ch == '}' //
+                                || ch == ']' //
+                                || ch == '\n' //
+                                || ch == '\r' //
+                                || ch == '\t' //
+                                || ch == EOI //
+                                || ch == '\f' //
+                                || ch == '\b') {
+                            this.token = token;
+                            return;
+                        }
+                    }
+
+                    throw new JSONException("scan null/new error");
+                }
                 case '(':
                     next();
                     token = LPAREN;
@@ -1110,82 +1177,6 @@ public final class JSONLexer {
         return decodeFast(text, np + 1, sp);
     }
 
-    private void scanTrue() {
-        if (text.startsWith("true", bp)) {
-            bp += 4;
-            ch = charAt(bp);
-
-            if (ch == ' ' //
-                || ch == ',' //
-                || ch == '}' //
-                || ch == ']' //
-                || ch == '\n' //
-                || ch == '\r' //
-                || ch == '\t' //
-                || ch == EOI //
-                || ch == '\f' //
-                || ch == '\b' //
-                || ch == ':') {
-                token = JSONToken.TRUE;
-                return;
-            }
-        }
-        throw new JSONException("scan true error");
-    }
-
-    private void scanNullOrNew() {
-        int token = 0;
-        if (text.startsWith("null", bp)) {
-            bp += 4;
-            token = JSONToken.NULL;
-        } else if (text.startsWith("new", bp)) {
-            bp += 3;
-            token = JSONToken.NEW;
-        }
-
-        if (token != 0) {
-            ch = charAt(bp);
-            if (ch == ' ' //
-                || ch == ',' //
-                || ch == '}' //
-                || ch == ']' //
-                || ch == '\n' //
-                || ch == '\r' //
-                || ch == '\t' //
-                || ch == EOI //
-                || ch == '\f' //
-                || ch == '\b') {
-                this.token = token;
-                return;
-            }
-        }
-
-        throw new JSONException("scan null/new error");
-    }
-
-    private void scanFalse() {
-        if (text.startsWith("false", bp)) {
-            bp += 5;
-            ch = charAt(bp);
-
-            if (ch == ' '//
-                || ch == ','//
-                || ch == '}'//
-                || ch == ']'//
-                || ch == '\n'//
-                || ch == '\r'//
-                || ch == '\t'//
-                || ch == EOI//
-                || ch == '\f'//
-                || ch == '\b'//
-                || ch == ':') {
-                token = JSONToken.FALSE;
-                return;
-            }
-        }
-        throw new JSONException("scan false error");
-    }
-
     private void scanIdent() {
         np = bp - 1;
         hasSpecial = false;
diff --git a/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_false.java b/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_false.java
index 6e93af7ee..bb87c8091 100755
--- a/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_false.java
+++ b/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_false.java
@@ -9,34 +9,18 @@ import com.alibaba.fastjson.parser.JSONLexer;
 import junit.framework.TestCase;
 
 public class JSONScannerTest_false extends TestCase {
-    Method method;
-    
-    protected void setUp() throws Exception {
-        method = JSONLexer.class.getDeclaredMethod("scanFalse");
-        method.setAccessible(true);
-    }
+   
 
     public void test_scan_false_0() throws Exception {
         JSONLexer lexer = new JSONLexer("false");
-        method.invoke(lexer);
-    }
-
-    public void test_scan_false_1() throws Exception {
-        Exception error = null;
-        try {
-            JSONLexer lexer = new JSONLexer("zalse");
-            method.invoke(lexer);
-        } catch (Exception e) {
-            error = e;
-        }
-        Assert.assertNotNull(error);
+        lexer.nextToken();
     }
 
     public void test_scan_false_2() throws Exception {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("fzlse");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -47,7 +31,7 @@ public class JSONScannerTest_false extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("fazse");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -58,7 +42,7 @@ public class JSONScannerTest_false extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("falze");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -69,7 +53,7 @@ public class JSONScannerTest_false extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("falsz");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -80,7 +64,7 @@ public class JSONScannerTest_false extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("falsee");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -91,7 +75,7 @@ public class JSONScannerTest_false extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("false\"");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -100,46 +84,46 @@ public class JSONScannerTest_false extends TestCase {
 
     public void test_scan_false_7() throws Exception {
         JSONLexer lexer = new JSONLexer("false a");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_8() throws Exception {
         JSONLexer lexer = new JSONLexer("false,");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_9() throws Exception {
         JSONLexer lexer = new JSONLexer("false\na");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_10() throws Exception {
         JSONLexer lexer = new JSONLexer("false\ra");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_11() throws Exception {
         JSONLexer lexer = new JSONLexer("false\ta");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_12() throws Exception {
         JSONLexer lexer = new JSONLexer("false\fa");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_13() throws Exception {
         JSONLexer lexer = new JSONLexer("false\ba");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_14() throws Exception {
         JSONLexer lexer = new JSONLexer("false}");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_15() throws Exception {
         JSONLexer lexer = new JSONLexer("false]");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 }
diff --git a/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_new.java b/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_new.java
index 473ebf072..c8a191ec7 100755
--- a/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_new.java
+++ b/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_new.java
@@ -9,23 +9,17 @@ import com.alibaba.fastjson.parser.JSONLexer;
 import junit.framework.TestCase;
 
 public class JSONScannerTest_new extends TestCase {
-    Method method;
-    
-    protected void setUp() throws Exception {
-        method = JSONLexer.class.getDeclaredMethod("scanNullOrNew");
-        method.setAccessible(true);
-    }
 
     public void test_scan_new_0() throws Exception {
         JSONLexer lexer = new JSONLexer("new");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_new_1() throws Exception {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("nww");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -36,7 +30,7 @@ public class JSONScannerTest_new extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("nee");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -47,7 +41,7 @@ public class JSONScannerTest_new extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("neel");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -58,7 +52,7 @@ public class JSONScannerTest_new extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("neww");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -69,7 +63,7 @@ public class JSONScannerTest_new extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("newe");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -80,7 +74,7 @@ public class JSONScannerTest_new extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("new\"");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -89,46 +83,46 @@ public class JSONScannerTest_new extends TestCase {
 
     public void test_scan_new_7() throws Exception {
         JSONLexer lexer = new JSONLexer("new a");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_new_8() throws Exception {
         JSONLexer lexer = new JSONLexer("new,");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_new_9() throws Exception {
         JSONLexer lexer = new JSONLexer("new\na");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_new_10() throws Exception {
         JSONLexer lexer = new JSONLexer("new\ra");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_new_11() throws Exception {
         JSONLexer lexer = new JSONLexer("new\ta");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_new_12() throws Exception {
         JSONLexer lexer = new JSONLexer("new\fa");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_new_13() throws Exception {
         JSONLexer lexer = new JSONLexer("new\ba");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_new_14() throws Exception {
         JSONLexer lexer = new JSONLexer("new}");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_new_15() throws Exception {
         JSONLexer lexer = new JSONLexer("new]");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 }
diff --git a/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_null.java b/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_null.java
index 793a563e6..dee6f2b30 100755
--- a/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_null.java
+++ b/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_null.java
@@ -10,34 +10,18 @@ import junit.framework.TestCase;
 
 public class JSONScannerTest_null extends TestCase {
 
-    Method method;
 
-    protected void setUp() throws Exception {
-        method = JSONLexer.class.getDeclaredMethod("scanNullOrNew");
-        method.setAccessible(true);
-    }
 
     public void test_scan_null_0() throws Exception {
         JSONLexer lexer = new JSONLexer("null");
-        method.invoke(lexer);
-    }
-
-    public void test_scan_null_1() throws Exception {
-        Exception error = null;
-        try {
-            JSONLexer lexer = new JSONLexer("zull");
-            method.invoke(lexer);
-        } catch (Exception e) {
-            error = e;
-        }
-        Assert.assertNotNull(error);
+        lexer.nextToken();
     }
 
     public void test_scan_null_2() throws Exception {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("nzll");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -48,7 +32,7 @@ public class JSONScannerTest_null extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("nuzl");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -59,7 +43,7 @@ public class JSONScannerTest_null extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("nulz");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -70,7 +54,7 @@ public class JSONScannerTest_null extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("nulle");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -81,7 +65,7 @@ public class JSONScannerTest_null extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("null\"");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -90,46 +74,46 @@ public class JSONScannerTest_null extends TestCase {
 
     public void test_scan_null_7() throws Exception {
         JSONLexer lexer = new JSONLexer("null a");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_null_8() throws Exception {
         JSONLexer lexer = new JSONLexer("null,");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_null_9() throws Exception {
         JSONLexer lexer = new JSONLexer("null\na");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_null_10() throws Exception {
         JSONLexer lexer = new JSONLexer("null\ra");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_null_11() throws Exception {
         JSONLexer lexer = new JSONLexer("null\ta");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_null_12() throws Exception {
         JSONLexer lexer = new JSONLexer("null\fa");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_null_13() throws Exception {
         JSONLexer lexer = new JSONLexer("null\ba");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_14() throws Exception {
         JSONLexer lexer = new JSONLexer("null}");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_15() throws Exception {
         JSONLexer lexer = new JSONLexer("null]");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 }
diff --git a/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_true.java b/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_true.java
index 54833f10f..51fe3ae07 100755
--- a/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_true.java
+++ b/src/test/java/com/alibaba/json/bvt/parser/JSONScannerTest_true.java
@@ -10,24 +10,16 @@ import com.alibaba.fastjson.parser.JSONLexer;
 import junit.framework.TestCase;
 
 public class JSONScannerTest_true extends TestCase {
-    
-    Method method;
-    
-    protected void setUp() throws Exception {
-        method = JSONLexer.class.getDeclaredMethod("scanTrue");
-        method.setAccessible(true);
-    }
-
     public void test_scan_true_0() throws Exception {
         JSONLexer lexer = new JSONLexer("true");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_true_1() throws Exception {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("frue");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -38,7 +30,7 @@ public class JSONScannerTest_true extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("ttue");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -49,7 +41,7 @@ public class JSONScannerTest_true extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("trze");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -60,7 +52,7 @@ public class JSONScannerTest_true extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("truz");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -71,7 +63,7 @@ public class JSONScannerTest_true extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("truee");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -82,7 +74,7 @@ public class JSONScannerTest_true extends TestCase {
         Exception error = null;
         try {
             JSONLexer lexer = new JSONLexer("true\"");
-            method.invoke(lexer);
+            lexer.nextToken();
         } catch (Exception e) {
             error = e;
         }
@@ -91,46 +83,46 @@ public class JSONScannerTest_true extends TestCase {
 
     public void test_scan_true_7() throws Exception {
         JSONLexer lexer = new JSONLexer("true a");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_true_8() throws Exception {
         JSONLexer lexer = new JSONLexer("true,");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_true_9() throws Exception {
         JSONLexer lexer = new JSONLexer("true\na");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_true_10() throws Exception {
         JSONLexer lexer = new JSONLexer("true\ra");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_true_11() throws Exception {
         JSONLexer lexer = new JSONLexer("true\ta");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_true_12() throws Exception {
         JSONLexer lexer = new JSONLexer("true\fa");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_true_13() throws Exception {
         JSONLexer lexer = new JSONLexer("true\ba");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_14() throws Exception {
         JSONLexer lexer = new JSONLexer("true}");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 
     public void test_scan_false_15() throws Exception {
         JSONLexer lexer = new JSONLexer("true]");
-        method.invoke(lexer);
+        lexer.nextToken();
     }
 }