Replace remaining StringBuffer uses with StringBuilder

src/main/javassist/bytecode/SignatureAttribute.java

@@ -230,7 +230,7 @@ public class SignatureAttribute extends AttributeInfo {
          */
         @Override
         public String toString() {
-            StringBuffer sbuf = new StringBuffer();
+            StringBuilder sbuf = new StringBuilder();
 
             TypeParameter.toString(sbuf, params);
             sbuf.append(" extends ").append(superClass);
@@ -246,7 +246,7 @@ public class SignatureAttribute extends AttributeInfo {
          * Returns the encoded string representing the method type signature.
          */
         public String encode() {
-            StringBuffer sbuf = new StringBuffer();
+            StringBuilder sbuf = new StringBuilder();
             if (params.length > 0) {
                 sbuf.append('<');
                 for (int i = 0; i < params.length; i++)
@@ -320,7 +320,7 @@ public class SignatureAttribute extends AttributeInfo {
          */
         @Override
         public String toString() {
-            StringBuffer sbuf = new StringBuffer();
+            StringBuilder sbuf = new StringBuilder();
 
             TypeParameter.toString(sbuf, typeParams);
             sbuf.append(" (");
@@ -339,7 +339,7 @@ public class SignatureAttribute extends AttributeInfo {
          * Returns the encoded string representing the method type signature.
          */
         public String encode() {
-            StringBuffer sbuf = new StringBuffer();
+            StringBuilder sbuf = new StringBuilder();
             if (typeParams.length > 0) {
                 sbuf.append('<');
                 for (int i = 0; i < typeParams.length; i++)
@@ -450,7 +450,7 @@ public class SignatureAttribute extends AttributeInfo {
             return sbuf.toString();
         }
 
-        static void toString(StringBuffer sbuf, TypeParameter[] tp) {
+        static void toString(StringBuilder sbuf, TypeParameter[] tp) {
             sbuf.append('<');
             for (int i = 0; i < tp.length; i++) {
                 if (i > 0)
@@ -462,7 +462,7 @@ public class SignatureAttribute extends AttributeInfo {
             sbuf.append('>');
         }
 
-        void encode(StringBuffer sb) {
+        void encode(StringBuilder sb) {
             sb.append(name);
             if (superClass == null)
                 sb.append(":Ljava/lang/Object;");
@@ -570,7 +570,7 @@ public class SignatureAttribute extends AttributeInfo {
                 return "? super " + type;
         }
 
-        static void encode(StringBuffer sb, TypeArgument[] args) {
+        static void encode(StringBuilder sb, TypeArgument[] args) {
             sb.append('<');
             for (int i = 0; i < args.length; i++) {
                 TypeArgument ta = args[i];
@@ -589,8 +589,8 @@ public class SignatureAttribute extends AttributeInfo {
      * Primitive types and object types.
      */
     public static abstract class Type {
-        abstract void encode(StringBuffer sb);
-        static void toString(StringBuffer sbuf, Type[] ts) {
+        abstract void encode(StringBuilder sb);
+        static void toString(StringBuilder sbuf, Type[] ts) {
             for (int i = 0; i < ts.length; i++) {
                 if (i > 0)
                     sbuf.append(", ");
@@ -647,7 +647,7 @@ public class SignatureAttribute extends AttributeInfo {
         }
 
         @Override
-        void encode(StringBuffer sb) {
+        void encode(StringBuilder sb) {
             sb.append(descriptor);
         }
     }
@@ -661,7 +661,7 @@ public class SignatureAttribute extends AttributeInfo {
          * Returns the encoded string representing the object type signature.
          */
         public String encode() {
-            StringBuffer sb = new StringBuffer();
+            StringBuilder sb = new StringBuilder();
             encode(sb);
             return sb.toString();
         }
@@ -782,13 +782,13 @@ public class SignatureAttribute extends AttributeInfo {
         }
 
         @Override
-        void encode(StringBuffer sb) {
+        void encode(StringBuilder sb) {
             sb.append('L');
             encode2(sb);
             sb.append(';');
         }
 
-        void encode2(StringBuffer sb) {
+        void encode2(StringBuilder sb) {
             ClassType parent = getDeclaringClass();
             if (parent != null) {
                 parent.encode2(sb);
@@ -876,7 +876,7 @@ public class SignatureAttribute extends AttributeInfo {
         }
 
         @Override
-        void encode(StringBuffer sb) {
+        void encode(StringBuilder sb) {
             for (int i = 0; i < dim; i++)
                 sb.append('[');
 
@@ -919,7 +919,7 @@ public class SignatureAttribute extends AttributeInfo {
         }
 
         @Override
-        void encode(StringBuffer sb) {
+        void encode(StringBuilder sb) {
             sb.append('T').append(name).append(';');
         }
     }