* Move almost all uses of StringBuffer to StringBuilder,

for efficiency (thanks Arsene for the suggestion)

apps/i2psnark/java/src/org/klomp/snark/BitField.java

@@ -140,7 +140,7 @@ public class BitField
   public String toString()
   {
     // Not very efficient
-    StringBuffer sb = new StringBuffer("BitField(");
+    StringBuilder sb = new StringBuilder("BitField(");
     sb.append(size).append(")[");
     for (int i = 0; i < size; i++)
       if (get(i))

apps/i2psnark/java/src/org/klomp/snark/MetaInfo.java

@@ -362,7 +362,7 @@ public class MetaInfo
    */
   private static String hexencode(byte[] bs)
   {
-    StringBuffer sb = new StringBuffer(bs.length*2);
+    StringBuilder sb = new StringBuilder(bs.length*2);
     for (int i = 0; i < bs.length; i++)
       {
         int c = bs[i] & 0xFF;
@@ -432,7 +432,7 @@ public class MetaInfo
   private byte[] calculateInfoHash()
   {
     Map info = createInfoMap();
-    StringBuffer buf = new StringBuffer(128);
+    StringBuilder buf = new StringBuilder(128);
     buf.append("info: ");
     for (Iterator iter = info.entrySet().iterator(); iter.hasNext(); ) {
         Map.Entry entry = (Map.Entry)iter.next();

apps/i2psnark/java/src/org/klomp/snark/PeerID.java

@@ -190,7 +190,7 @@ public class PeerID implements Comparable
   {
     boolean leading_zeros = true;
 
-    StringBuffer sb = new StringBuffer(bs.length*2);
+    StringBuilder sb = new StringBuilder(bs.length*2);
     for (int i = 0; i < bs.length; i++)
       {
         int c = bs[i] & 0xFF;

apps/i2psnark/java/src/org/klomp/snark/TrackerClient.java

@@ -373,7 +373,7 @@ public class TrackerClient extends I2PAppThread
    */
   public static String urlencode(byte[] bs)
   {
-    StringBuffer sb = new StringBuffer(bs.length*3);
+    StringBuilder sb = new StringBuilder(bs.length*3);
     for (int i = 0; i < bs.length; i++)
       {
         int c = bs[i] & 0xFF;

apps/i2psnark/java/src/org/klomp/snark/web/I2PSnarkServlet.java

@@ -759,7 +759,7 @@ public class I2PSnarkServlet extends HttpServlet {
                   + _manager.util().getI2CPHost() + "\" size=\"15\" /> ");
         out.write("port: <input type=\"text\" name=\"i2cpPort\" value=\"" +
                   + _manager.util().getI2CPPort() + "\" size=\"5\" maxlength=\"5\" /> <br />\n");
-        StringBuffer opts = new StringBuffer(64);
+        StringBuilder opts = new StringBuilder(64);
         Map options = new TreeMap(_manager.util().getI2CPOptions());
         for (Iterator iter = options.entrySet().iterator(); iter.hasNext(); ) {
             Map.Entry entry = (Map.Entry)iter.next();