starting from scratch

[deepakagrawal121]

Please create an example to start with scratch.
Means create wallet and a address for that wallet.

[sublimator]

package com.ripple.utils.cli;

import com.ripple.config.Config;
import com.ripple.core.coretypes.AccountID;
import com.ripple.crypto.ecdsa.IKeyPair;
import com.ripple.crypto.ecdsa.Seed;

import java.io.IOException;
import java.security.SecureRandom;
import java.util.Arrays;

public class GenerateWallet {
    static {
        Config.initBouncy();
    }
    static SecureRandom random = new SecureRandom();

    public static void main(String[] args) throws IOException {
        Seed seed = new Seed(randomSeed());
        // The keyPair
        IKeyPair key = seed.keyPair();
        // The AccountID
        AccountID accountID = AccountID.fromKeyPair(key);
        // Base58 encoded seed
        String secret = seed.toString();

        System.out.println("account-id/address: " + accountID);
        System.out.println("secret/master-seed: " + secret);

        assert Arrays.equals(seed.bytes(), Seed.fromBase58(secret).bytes());
    }

    private static byte[] randomSeed() {
        byte[] seedBytes = new byte[16];
        random.nextBytes(seedBytes);
        return seedBytes;
    }
}

[sublimator]

A wallet is created from 128 bits of seed entropy, by doing some elliptic curve math, ultimately ending up with a 256 bit scalar secret, with a corresponding public key point. This public key is byte encoded in a canonical form, then hashed to create a 160 bit account id. That is encoded using base58. The 160 bit value is referred to as an account-id or address.

The 128 bit seed value is referred to as the secret or master seed.