Migrate from Guava Charsets to Java7 StandardCharsets constants.

core/src/main/java/org/bitcoinj/core/BitcoinSerializer.java

@@ -20,12 +20,11 @@ package org.bitcoinj.core;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Charsets;
-
 import java.io.IOException;
 import java.io.OutputStream;
 import java.nio.BufferUnderflowException;
 import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
 import java.util.HashMap;
 import java.util.Map;
 
@@ -366,7 +365,7 @@ public class BitcoinSerializer extends MessageSerializer {
             for (; header[cursor] != 0 && cursor < COMMAND_LEN; cursor++) ;
             byte[] commandBytes = new byte[cursor];
             System.arraycopy(header, 0, commandBytes, 0, cursor);
-            command = new String(commandBytes, Charsets.US_ASCII);
+            command = new String(commandBytes, StandardCharsets.US_ASCII);
             cursor = COMMAND_LEN;
 
             size = (int) readUint32(header, cursor);

core/src/main/java/org/bitcoinj/core/CheckpointManager.java

@@ -19,7 +19,6 @@ package org.bitcoinj.core;
 import org.bitcoinj.store.BlockStore;
 import org.bitcoinj.store.BlockStoreException;
 import org.bitcoinj.store.FullPrunedBlockStore;
-import com.google.common.base.Charsets;
 import com.google.common.hash.HashCode;
 import com.google.common.hash.Hasher;
 import com.google.common.hash.Hashing;
@@ -37,6 +36,7 @@ import java.io.InputStream;
 import java.io.InputStreamReader;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
+import java.nio.charset.StandardCharsets;
 import java.security.DigestInputStream;
 import java.security.MessageDigest;
 import java.util.Arrays;
@@ -155,7 +155,7 @@ public class CheckpointManager {
         Hasher hasher = Hashing.sha256().newHasher();
         BufferedReader reader = null;
         try {
-            reader = new BufferedReader(new InputStreamReader(inputStream, Charsets.US_ASCII));
+            reader = new BufferedReader(new InputStreamReader(inputStream, StandardCharsets.US_ASCII));
             String magic = reader.readLine();
             if (!TEXTUAL_MAGIC.equals(magic))
                 throw new IOException("unexpected magic: " + magic);

core/src/main/java/org/bitcoinj/core/ECKey.java

@@ -20,7 +20,6 @@ package org.bitcoinj.core;
 
 import org.bitcoinj.crypto.*;
 import com.google.common.annotations.VisibleForTesting;
-import com.google.common.base.Charsets;
 import com.google.common.base.MoreObjects;
 import com.google.common.base.Objects;
 import com.google.common.base.Preconditions;
@@ -54,6 +53,7 @@ import javax.annotation.Nullable;
 import java.io.ByteArrayOutputStream;
 import java.io.IOException;
 import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
 import java.security.SecureRandom;
 import java.security.SignatureException;
 import java.util.Arrays;
@@ -881,7 +881,7 @@ public class ECKey implements EncryptableItem {
         sigData[0] = (byte)headerByte;
         System.arraycopy(Utils.bigIntegerToBytes(sig.r, 32), 0, sigData, 1, 32);
         System.arraycopy(Utils.bigIntegerToBytes(sig.s, 32), 0, sigData, 33, 32);
-        return new String(Base64.encode(sigData), Charsets.UTF_8);
+        return new String(Base64.encode(sigData), StandardCharsets.UTF_8);
     }
 
     /**
@@ -1290,7 +1290,7 @@ public class ECKey implements EncryptableItem {
 
     /** The string that prefixes all text messages signed using Bitcoin keys. */
     private static final String BITCOIN_SIGNED_MESSAGE_HEADER = "Bitcoin Signed Message:\n";
-    private static final byte[] BITCOIN_SIGNED_MESSAGE_HEADER_BYTES = BITCOIN_SIGNED_MESSAGE_HEADER.getBytes(Charsets.UTF_8);
+    private static final byte[] BITCOIN_SIGNED_MESSAGE_HEADER_BYTES = BITCOIN_SIGNED_MESSAGE_HEADER.getBytes(StandardCharsets.UTF_8);
 
     /**
      * <p>Given a textual message, returns a byte buffer formatted as follows:</p>
@@ -1301,7 +1301,7 @@ public class ECKey implements EncryptableItem {
             ByteArrayOutputStream bos = new ByteArrayOutputStream();
             bos.write(BITCOIN_SIGNED_MESSAGE_HEADER_BYTES.length);
             bos.write(BITCOIN_SIGNED_MESSAGE_HEADER_BYTES);
-            byte[] messageBytes = message.getBytes(Charsets.UTF_8);
+            byte[] messageBytes = message.getBytes(StandardCharsets.UTF_8);
             VarInt size = new VarInt(messageBytes.length);
             bos.write(size.encode());
             bos.write(messageBytes);

core/src/main/java/org/bitcoinj/core/Message.java

@@ -20,10 +20,9 @@ package org.bitcoinj.core;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Charsets;
-
 import java.io.*;
 import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
 import java.util.Arrays;
 
 import static com.google.common.base.Preconditions.checkState;
@@ -349,7 +348,7 @@ public abstract class Message {
 
     protected String readStr() throws ProtocolException {
         long length = readVarInt();
-        return length == 0 ? "" : new String(readBytes((int) length), Charsets.UTF_8); // optimization for empty strings
+        return length == 0 ? "" : new String(readBytes((int) length), StandardCharsets.UTF_8); // optimization for empty strings
     }
 
     protected Sha256Hash readHash() throws ProtocolException {

core/src/main/java/org/bitcoinj/core/RejectMessage.java

@@ -17,10 +17,10 @@
 
 package org.bitcoinj.core;
 
-import com.google.common.base.Charsets;
 import com.google.common.base.Objects;
 import java.io.IOException;
 import java.io.OutputStream;
+import java.nio.charset.StandardCharsets;
 import java.util.Locale;
 
 /**
@@ -98,11 +98,11 @@ public class RejectMessage extends Message {
 
     @Override
     public void bitcoinSerializeToStream(OutputStream stream) throws IOException {
-        byte[] messageBytes = message.getBytes(Charsets.UTF_8);
+        byte[] messageBytes = message.getBytes(StandardCharsets.UTF_8);
         stream.write(new VarInt(messageBytes.length).encode());
         stream.write(messageBytes);
         stream.write(code.code);
-        byte[] reasonBytes = reason.getBytes(Charsets.UTF_8);
+        byte[] reasonBytes = reason.getBytes(StandardCharsets.UTF_8);
         stream.write(new VarInt(reasonBytes.length).encode());
         stream.write(reasonBytes);
         if ("block".equals(message) || "tx".equals(message))

core/src/main/java/org/bitcoinj/core/VersionMessage.java

@@ -16,7 +16,6 @@
 
 package org.bitcoinj.core;
 
-import com.google.common.base.Charsets;
 import com.google.common.base.Objects;
 import com.google.common.net.InetAddresses;
 
@@ -26,6 +25,7 @@ import java.io.OutputStream;
 import java.math.BigInteger;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
+import java.nio.charset.StandardCharsets;
 import java.util.Locale;
 
 /**
@@ -175,7 +175,7 @@ public class VersionMessage extends Message {
         Utils.uint32ToByteStreamLE(0, buf);
         Utils.uint32ToByteStreamLE(0, buf);
         // Now comes subVer.
-        byte[] subVerBytes = subVer.getBytes(Charsets.UTF_8);
+        byte[] subVerBytes = subVer.getBytes(StandardCharsets.UTF_8);
         buf.write(new VarInt(subVerBytes.length).encode());
         buf.write(subVerBytes);
         // Size of known block chain.

core/src/main/java/org/bitcoinj/crypto/BIP38PrivateKey.java

@@ -17,7 +17,6 @@
 package org.bitcoinj.crypto;
 
 import org.bitcoinj.core.*;
-import com.google.common.base.Charsets;
 import com.google.common.primitives.Bytes;
 import com.lambdaworks.crypto.SCrypt;
 
@@ -25,6 +24,7 @@ import javax.crypto.Cipher;
 import javax.crypto.spec.SecretKeySpec;
 
 import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
 import java.security.GeneralSecurityException;
 import java.text.Normalizer;
 import java.util.Arrays;
@@ -117,7 +117,7 @@ public class BIP38PrivateKey extends PrefixedChecksummedBytes {
     public ECKey decrypt(String passphrase) throws BadPassphraseException {
         String normalizedPassphrase = Normalizer.normalize(passphrase, Normalizer.Form.NFC);
         ECKey key = ecMultiply ? decryptEC(normalizedPassphrase) : decryptNoEC(normalizedPassphrase);
-        Sha256Hash hash = Sha256Hash.twiceOf(LegacyAddress.fromKey(params, key).toString().getBytes(Charsets.US_ASCII));
+        Sha256Hash hash = Sha256Hash.twiceOf(LegacyAddress.fromKey(params, key).toString().getBytes(StandardCharsets.US_ASCII));
         byte[] actualAddressHash = Arrays.copyOfRange(hash.getBytes(), 0, 4);
         if (!Arrays.equals(actualAddressHash, addressHash))
             throw new BadPassphraseException();
@@ -126,7 +126,7 @@ public class BIP38PrivateKey extends PrefixedChecksummedBytes {
 
     private ECKey decryptNoEC(String normalizedPassphrase) {
         try {
-            byte[] derived = SCrypt.scrypt(normalizedPassphrase.getBytes(Charsets.UTF_8), addressHash, 16384, 8, 8, 64);
+            byte[] derived = SCrypt.scrypt(normalizedPassphrase.getBytes(StandardCharsets.UTF_8), addressHash, 16384, 8, 8, 64);
             byte[] key = Arrays.copyOfRange(derived, 32, 64);
             SecretKeySpec keyspec = new SecretKeySpec(key, "AES");
 
@@ -148,7 +148,7 @@ public class BIP38PrivateKey extends PrefixedChecksummedBytes {
             byte[] ownerEntropy = Arrays.copyOfRange(content, 0, 8);
             byte[] ownerSalt = hasLotAndSequence ? Arrays.copyOfRange(ownerEntropy, 0, 4) : ownerEntropy;
 
-            byte[] passFactorBytes = SCrypt.scrypt(normalizedPassphrase.getBytes(Charsets.UTF_8), ownerSalt, 16384, 8, 8, 32);
+            byte[] passFactorBytes = SCrypt.scrypt(normalizedPassphrase.getBytes(StandardCharsets.UTF_8), ownerSalt, 16384, 8, 8, 32);
             if (hasLotAndSequence) {
                 byte[] hashBytes = Bytes.concat(passFactorBytes, ownerEntropy);
                 checkState(hashBytes.length == 40);

core/src/main/java/org/bitcoinj/crypto/MnemonicCode.java

@@ -22,7 +22,6 @@ import org.bitcoinj.core.Utils;
 import org.slf4j.Logger;
 import org.slf4j.LoggerFactory;
 
-import com.google.common.base.Charsets;
 import com.google.common.base.Stopwatch;
 
 import java.io.BufferedReader;
@@ -30,6 +29,7 @@ import java.io.FileNotFoundException;
 import java.io.IOException;
 import java.io.InputStream;
 import java.io.InputStreamReader;
+import java.nio.charset.StandardCharsets;
 import java.security.MessageDigest;
 import java.util.ArrayList;
 import java.util.Collections;
@@ -88,7 +88,7 @@ public class MnemonicCode {
      * is supplied the digest of the words will be checked.
      */
     public MnemonicCode(InputStream wordstream, String wordListDigest) throws IOException, IllegalArgumentException {
-        BufferedReader br = new BufferedReader(new InputStreamReader(wordstream, Charsets.UTF_8));
+        BufferedReader br = new BufferedReader(new InputStreamReader(wordstream, StandardCharsets.UTF_8));
         this.wordList = new ArrayList<>(2048);
         MessageDigest md = Sha256Hash.newDigest();
         String word;

core/src/main/java/org/bitcoinj/crypto/PBKDF2SHA512.java

@@ -26,11 +26,10 @@ package org.bitcoinj.crypto;
 import javax.crypto.Mac;
 import javax.crypto.spec.SecretKeySpec;
 
-import com.google.common.base.Charsets;
-
 import java.io.ByteArrayOutputStream;
 import java.nio.ByteBuffer;
 import java.nio.ByteOrder;
+import java.nio.charset.StandardCharsets;
 
 /**
  * <p>This is a clean-room implementation of PBKDF2 using RFC 2898 as a reference.</p>
@@ -74,13 +73,13 @@ public class PBKDF2SHA512 {
         byte[] U_LAST = null;
         byte[] U_XOR = null;
 
-        SecretKeySpec key = new SecretKeySpec(P.getBytes(Charsets.UTF_8), "HmacSHA512");
+        SecretKeySpec key = new SecretKeySpec(P.getBytes(StandardCharsets.UTF_8), "HmacSHA512");
         Mac mac = Mac.getInstance(key.getAlgorithm());
         mac.init(key);
 
         for (int j = 0; j < c; j++) {
             if (j == 0) {
-                byte[] baS = S.getBytes(Charsets.UTF_8);
+                byte[] baS = S.getBytes(StandardCharsets.UTF_8);
                 byte[] baI = INT(i);
                 byte[] baU = new byte[baS.length + baI.length];
 

core/src/main/java/org/bitcoinj/store/SPVBlockStore.java

@@ -20,12 +20,11 @@ import org.bitcoinj.core.*;
 import org.bitcoinj.utils.*;
 import org.slf4j.*;
 
-import com.google.common.base.Charsets;
-
 import javax.annotation.*;
 import java.io.*;
 import java.nio.*;
 import java.nio.channels.*;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
 import java.util.concurrent.locks.*;
 
@@ -133,7 +132,7 @@ public class SPVBlockStore implements BlockStore {
             if (exists) {
                 header = new byte[4];
                 buffer.get(header);
-                if (!new String(header, Charsets.US_ASCII).equals(HEADER_MAGIC))
+                if (!new String(header, StandardCharsets.US_ASCII).equals(HEADER_MAGIC))
                     throw new BlockStoreException("Header bytes do not equal " + HEADER_MAGIC);
             } else {
                 initNewStore(params);

core/src/main/java/org/bitcoinj/wallet/DeterministicSeed.java

@@ -20,12 +20,13 @@ package org.bitcoinj.wallet;
 import org.bitcoinj.core.Utils;
 import org.bitcoinj.crypto.*;
 
-import com.google.common.base.Charsets;
 import com.google.common.base.Objects;
 import com.google.common.base.Splitter;
 import org.spongycastle.crypto.params.KeyParameter;
 
 import javax.annotation.Nullable;
+
+import java.nio.charset.StandardCharsets;
 import java.security.SecureRandom;
 import java.util.List;
 
@@ -188,7 +189,7 @@ public class DeterministicSeed implements EncryptableItem {
     }
 
     private byte[] getMnemonicAsBytes() {
-        return Utils.SPACE_JOINER.join(mnemonicCode).getBytes(Charsets.UTF_8);
+        return Utils.SPACE_JOINER.join(mnemonicCode).getBytes(StandardCharsets.UTF_8);
     }
 
     public DeterministicSeed decrypt(KeyCrypter crypter, String passphrase, KeyParameter aesKey) {
@@ -236,7 +237,7 @@ public class DeterministicSeed implements EncryptableItem {
     }
 
     private static List<String> decodeMnemonicCode(byte[] mnemonicCode) {
-        return decodeMnemonicCode(new String(mnemonicCode, Charsets.UTF_8));
+        return decodeMnemonicCode(new String(mnemonicCode, StandardCharsets.UTF_8));
     }
 
     private static List<String> decodeMnemonicCode(String mnemonicCode) {

core/src/test/java/org/bitcoinj/core/PeerTest.java

@@ -16,7 +16,6 @@
 
 package org.bitcoinj.core;
 
-import com.google.common.base.Charsets;
 import com.google.common.collect.*;
 import org.bitcoinj.core.listeners.*;
 import org.bitcoinj.params.TestNet3Params;
@@ -43,6 +42,7 @@ import java.io.OutputStream;
 import java.net.InetSocketAddress;
 import java.net.SocketException;
 import java.nio.channels.CancelledKeyException;
+import java.nio.charset.StandardCharsets;
 import java.util.ArrayList;
 import java.util.Arrays;
 import java.util.Collection;
@@ -774,7 +774,7 @@ public class PeerTest extends TestWithNetworkConnections {
         Transaction t2 = new Transaction(UNITTEST);
         t2.setLockTime(999999);
         // Add a fake input to t3 that goes nowhere.
-        Sha256Hash t3 = Sha256Hash.of("abc".getBytes(Charsets.UTF_8));
+        Sha256Hash t3 = Sha256Hash.of("abc".getBytes(StandardCharsets.UTF_8));
         t2.addInput(new TransactionInput(UNITTEST, t2, new byte[]{}, new TransactionOutPoint(UNITTEST, 0, t3)));
         t2.getInput(0).setSequenceNumber(0xDEADBEEF);
         t2.addOutput(COIN, new ECKey());

core/src/test/java/org/bitcoinj/script/ScriptTest.java

@@ -26,7 +26,6 @@ import org.bitcoinj.crypto.TransactionSignature;
 import org.bitcoinj.params.MainNetParams;
 import org.bitcoinj.params.TestNet3Params;
 import org.bitcoinj.script.Script.VerifyFlag;
-import com.google.common.base.Charsets;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
 
@@ -39,6 +38,7 @@ import org.slf4j.LoggerFactory;
 import java.io.IOException;
 import java.io.InputStreamReader;
 import java.math.BigInteger;
+import java.nio.charset.StandardCharsets;
 import java.util.*;
 
 import static org.bitcoinj.core.Utils.HEX;
@@ -254,7 +254,7 @@ public class ScriptTest {
             } else if (w.length() >= 2 && w.startsWith("'") && w.endsWith("'")) {
                 // Single-quoted string, pushed as data. NOTE: this is poor-man's
                 // parsing, spaces/tabs/newlines in single-quoted strings won't work.
-                Script.writeBytes(out, w.substring(1, w.length() - 1).getBytes(Charsets.UTF_8));
+                Script.writeBytes(out, w.substring(1, w.length() - 1).getBytes(StandardCharsets.UTF_8));
             } else if (ScriptOpCodes.getOpCode(w) != OP_INVALIDOPCODE) {
                 // opcode, e.g. OP_ADD or OP_1:
                 out.write(ScriptOpCodes.getOpCode(w));
@@ -286,7 +286,7 @@ public class ScriptTest {
     @Test
     public void dataDrivenScripts() throws Exception {
         JsonNode json = new ObjectMapper()
-                .readTree(new InputStreamReader(getClass().getResourceAsStream("script_tests.json"), Charsets.UTF_8));
+                .readTree(new InputStreamReader(getClass().getResourceAsStream("script_tests.json"), StandardCharsets.UTF_8));
         for (JsonNode test : json) {
             if (test.size() == 1)
                 continue; // skip comment
@@ -358,7 +358,7 @@ public class ScriptTest {
     @Test
     public void dataDrivenValidTransactions() throws Exception {
         JsonNode json = new ObjectMapper().readTree(new InputStreamReader(getClass().getResourceAsStream(
-                "tx_valid.json"), Charsets.UTF_8));
+                "tx_valid.json"), StandardCharsets.UTF_8));
         for (JsonNode test : json) {
             if (test.isArray() && test.size() == 1 && test.get(0).isTextual())
                 continue; // This is a comment.
@@ -389,7 +389,7 @@ public class ScriptTest {
     @Test
     public void dataDrivenInvalidTransactions() throws Exception {
         JsonNode json = new ObjectMapper().readTree(new InputStreamReader(getClass().getResourceAsStream(
-                "tx_invalid.json"), Charsets.UTF_8));
+                "tx_invalid.json"), StandardCharsets.UTF_8));
         for (JsonNode test : json) {
             if (test.isArray() && test.size() == 1 && test.get(0).isTextual())
                 continue; // This is a comment.

core/src/test/java/org/bitcoinj/wallet/DeterministicKeyChainTest.java

@@ -31,7 +31,6 @@ import org.bitcoinj.utils.BriefLogFormatter;
 import org.bitcoinj.utils.Threading;
 import org.bitcoinj.wallet.listeners.AbstractKeyChainEventListener;
 
-import com.google.common.base.Charsets;
 import com.google.common.base.Joiner;
 import com.google.common.collect.ImmutableList;
 import com.google.common.collect.Lists;
@@ -42,6 +41,7 @@ import org.junit.Test;
 import org.spongycastle.crypto.params.KeyParameter;
 
 import java.io.IOException;
+import java.nio.charset.StandardCharsets;
 import java.security.SecureRandom;
 import java.util.List;
 
@@ -693,7 +693,7 @@ public class DeterministicKeyChainTest {
     private String checkSerialization(List<Protos.Key> keys, String filename) {
         try {
             String sb = protoToString(keys);
-            List<String> lines = Resources.readLines(getClass().getResource(filename), Charsets.UTF_8);
+            List<String> lines = Resources.readLines(getClass().getResource(filename), StandardCharsets.UTF_8);
             String expected = Joiner.on('\n').join(lines);
             assertEquals(expected, sb);
             return expected;

tools/src/main/java/org/bitcoinj/tools/BuildCheckpoints.java

@@ -27,7 +27,6 @@ import org.bitcoinj.store.BlockStore;
 import org.bitcoinj.store.MemoryBlockStore;
 import org.bitcoinj.utils.BriefLogFormatter;
 import org.bitcoinj.utils.Threading;
-import com.google.common.base.Charsets;
 import com.google.common.io.Resources;
 import joptsimple.OptionParser;
 import joptsimple.OptionSet;
@@ -43,6 +42,7 @@ import java.io.PrintWriter;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
 import java.nio.ByteBuffer;
+import java.nio.charset.StandardCharsets;
 import java.security.DigestOutputStream;
 import java.security.MessageDigest;
 import java.util.*;
@@ -69,7 +69,7 @@ public class BuildCheckpoints {
         OptionSet options = parser.parse(args);
 
         if (options.has("help")) {
-            System.out.println(Resources.toString(BuildCheckpoints.class.getResource("build-checkpoints-help.txt"), Charsets.UTF_8));
+            System.out.println(Resources.toString(BuildCheckpoints.class.getResource("build-checkpoints-help.txt"), StandardCharsets.UTF_8));
             return;
         }
 
@@ -196,7 +196,7 @@ public class BuildCheckpoints {
     }
 
     private static void writeTextualCheckpoints(TreeMap<Integer, StoredBlock> checkpoints, File file) throws IOException {
-        PrintWriter writer = new PrintWriter(new OutputStreamWriter(new FileOutputStream(file), Charsets.US_ASCII));
+        PrintWriter writer = new PrintWriter(new OutputStreamWriter(new FileOutputStream(file), StandardCharsets.US_ASCII));
         writer.println("TXT CHECKPOINTS 1");
         writer.println("0"); // Number of signatures to read. Do this later.
         writer.println(checkpoints.size());

tools/src/main/java/org/bitcoinj/tools/WalletTool.java

@@ -34,7 +34,6 @@ import org.bitcoinj.utils.BriefLogFormatter;
 import org.bitcoinj.wallet.DeterministicSeed;
 import org.bitcoinj.wallet.DeterministicUpgradeRequiredException;
 import org.bitcoinj.wallet.DeterministicUpgradeRequiresPassword;
-import com.google.common.base.Charsets;
 import com.google.common.base.Splitter;
 import com.google.common.collect.ImmutableList;
 import com.google.common.io.Resources;
@@ -95,6 +94,7 @@ import java.io.*;
 import java.math.BigInteger;
 import java.net.InetAddress;
 import java.net.UnknownHostException;
+import java.nio.charset.StandardCharsets;
 import java.security.SecureRandom;
 import java.text.ParseException;
 import java.text.SimpleDateFormat;
@@ -266,7 +266,7 @@ public class WalletTool {
 
         if (args.length == 0 || options.has("help") ||
                 options.nonOptionArguments().size() < 1 || options.nonOptionArguments().contains("help")) {
-            System.out.println(Resources.toString(WalletTool.class.getResource("wallet-tool-help.txt"), Charsets.UTF_8));
+            System.out.println(Resources.toString(WalletTool.class.getResource("wallet-tool-help.txt"), StandardCharsets.UTF_8));
             return;
         }