Java code to create LTC, DASH etc... addresses using BitcoinJ

altcoin_address_generation.java

import org.bitcoinj.core.*;

int PREFIX = XXX;

/*PREFIX -> 
  48: LTC
  76: DASH
  30: DOGE
  7352: ZEC
  38: BCH
  ...*/

ECKey key = new ECKey();
DumpedPrivateKey privKey = key.getPrivateKeyEncoded(NetworkParameters.prodNet());
byte[] shato = Sha256Hash.hash(key.getPubKey());
Ripemd160 r = Ripemd160.from(shato);
byte[] ripemdato = r.bytes();
byte[] prefixAdded = new byte[ripemdato.length + 1];
prefixAdded[0] = PREFIX;
int j = 1;
for (int i = 0; i < ripemdato.length; i++) {
    prefixAdded[j++] = ripemdato[i];
}
byte[] shato1 = Sha256Hash.hash(prefixAdded);
byte[] shato2 = Sha256Hash.hash(shato1);
byte[] checksum = new byte[4];
for (int i = 0; i < 4; i++) {
    checksum[i] = shato2[i];
}
byte[] finalAdd = new byte[prefixAdded.length + 4];
for (int i = 0; i < prefixAdded.length; i++) {
    finalAdd[i] = prefixAdded[i];
}

finalAdd[prefixAdded.length] = checksum[0];
finalAdd[prefixAdded.length + 1] = checksum[1];
finalAdd[prefixAdded.length + 2] = checksum[2];
finalAdd[prefixAdded.length + 3] = checksum[3];

String address = Base58.encode(finalAdd);