Use standard charset constants whenever possible

src/main/java/com/threerings/getdown/data/Digest.java

@@ -19,6 +19,7 @@ import com.threerings.getdown.util.Config;
 import com.threerings.getdown.util.ProgressObserver;
 
 import static com.threerings.getdown.Log.log;
+import static java.nio.charset.StandardCharsets.UTF_8;
 
 /**
  * Manages the <code>digest.txt</code> file and the computing and processing of digests for an
@@ -111,7 +112,7 @@ public class Digest
             }
             // finally compute and append the digest for the file contents
             MessageDigest md = getMessageDigest(version);
-            byte[] contents = data.toString().getBytes("UTF-8");
+            byte[] contents = data.toString().getBytes(UTF_8);
             String filename = digestFile(version);
             pout.println(filename + " = " + StringUtil.hexlate(md.digest(contents)));
         }
@@ -168,7 +169,7 @@ public class Digest
 
         // we've reached the end, validate our contents
         MessageDigest md = getMessageDigest(version);
-        byte[] contents = data.toString().getBytes("UTF-8");
+        byte[] contents = data.toString().getBytes(UTF_8);
         String hash = StringUtil.hexlate(md.digest(contents));
         if (!hash.equals(_metaDigest)) {
             String err = MessageUtil.tcompose("m.invalid_digest_file", _metaDigest, hash);

src/main/java/com/threerings/getdown/tools/Digester.java

@@ -23,6 +23,8 @@ import com.threerings.getdown.data.Digest;
 import com.threerings.getdown.data.Resource;
 import com.threerings.getdown.util.Base64;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 /**
  * Handles the generation of the digest.txt file.
  */
@@ -120,7 +122,7 @@ public class Digester
 
             // Write out the signature
             String signed = Base64.encodeToString(sig.sign(), Base64.DEFAULT);
-            signatureOutput.write(signed.getBytes("utf8"));
+            signatureOutput.write(signed.getBytes(UTF_8));
         }
     }
 }

src/main/java/com/threerings/getdown/tools/JarDiff.java

@@ -45,6 +45,8 @@ import java.io.*;
 import java.util.*;
 import java.util.jar.*;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 /**
  * JarDiff is able to create a jar file containing the delta between two jar files (old and new).
  * The delta jar file can then be applied to the old jar file to reconstruct the new jar file.
@@ -229,7 +231,7 @@ public class JarDiff implements JarDiffCodes
         }
 
         jos.putNextEntry(new JarEntry(INDEX_NAME));
-        byte[] bytes = writer.toString().getBytes("UTF-8");
+        byte[] bytes = writer.toString().getBytes(UTF_8);
         jos.write(bytes, 0, bytes.length);
     }
 

src/main/java/com/threerings/getdown/tools/JarDiffPatcher.java

@@ -27,6 +27,8 @@ import java.util.jar.JarOutputStream;
 
 import com.threerings.getdown.util.ProgressObserver;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 /**
  * Applies a jardiff patch to a jar file.
  */
@@ -178,7 +180,7 @@ public class JarDiffPatcher implements JarDiffCodes
         }
 
         LineNumberReader indexReader =
-            new LineNumberReader(new InputStreamReader(is, "UTF-8"));
+            new LineNumberReader(new InputStreamReader(is, UTF_8));
         String line = indexReader.readLine();
         if (line == null || !line.equals(VERSION_HEADER)) {
             throw new IOException("jardiff.error.badheader: " + line);

src/main/java/com/threerings/getdown/util/Base64.java

@@ -16,7 +16,7 @@
 
 package com.threerings.getdown.util;
 
-import java.io.UnsupportedEncodingException;
+import static java.nio.charset.StandardCharsets.US_ASCII;
 
 /**
  * Utilities for encoding and decoding the Base64 representation of
@@ -452,12 +452,7 @@ public class Base64 {
      *               adheres to RFC 2045.
      */
     public static String encodeToString(byte[] input, int flags) {
-        try {
-            return new String(encode(input, flags), "US-ASCII");
-        } catch (UnsupportedEncodingException e) {
-            // US-ASCII is guaranteed to be available.
-            throw new AssertionError(e);
-        }
+        return new String(encode(input, flags), US_ASCII);
     }
 
     /**
@@ -473,12 +468,7 @@ public class Base64 {
      *               adheres to RFC 2045.
      */
     public static String encodeToString(byte[] input, int offset, int len, int flags) {
-        try {
-            return new String(encode(input, offset, len, flags), "US-ASCII");
-        } catch (UnsupportedEncodingException e) {
-            // US-ASCII is guaranteed to be available.
-            throw new AssertionError(e);
-        }
+        return new String(encode(input, offset, len, flags), US_ASCII);
     }
 
     /**

src/main/java/com/threerings/getdown/util/ConnectionUtil.java

@@ -10,10 +10,11 @@ import java.net.HttpURLConnection;
 import java.net.URL;
 import java.net.URLConnection;
 import java.net.URLDecoder;
-
 import com.threerings.getdown.data.SysProps;
 import com.threerings.getdown.util.Base64;
 
+import static java.nio.charset.StandardCharsets.UTF_8;
+
 public class ConnectionUtil
 {
     /**
@@ -49,7 +50,7 @@ public class ConnectionUtil
             // Remove any percent-encoding in the username/password
             userInfo = URLDecoder.decode(userInfo, "UTF-8");
             // Now base64 encode the auth info and make it a single line
-            String encoded = Base64.encodeToString(userInfo.getBytes("UTF-8"), Base64.DEFAULT).
+            String encoded = Base64.encodeToString(userInfo.getBytes(UTF_8), Base64.DEFAULT).
                 replaceAll("\\n","").replaceAll("\\r", "");
             conn.setRequestProperty("Authorization", "Basic " + encoded);
         }