1. Build Integration

curl -X POST https://api.razorpay.com/v1/orders
-u [YOUR_KEY_ID]:[YOUR_KEY_SECRET]
-H 'content-type:application/json'
-d '{
    "amount": 50000,
    "currency": "USD",
    "receipt": "rcptid_11",
    "partial_payment": true,
    "first_payment_min_amount": 23000
}'

try {
  JSONObject orderRequest = new JSONObject();
  orderRequest.put("amount", 50000); // amount in the smallest currency unit
  orderRequest.put("currency", "USD");
  orderRequest.put("receipt", "order_rcptid_11");

  Order order = razorpay.Orders.create(orderRequest);
} catch (RazorpayException e) {
  // Handle Exception
  System.out.println(e.getMessage());
}

import razorpay
client = razorpay.Client(auth=("api_key", "api_secret"))

DATA = {
    "amount": 100,
    "currency": "USD",
    "receipt": "receipt#1",
    "notes": {
        "key1": "value3",
        "key2": "value2"
    }
}
client.order.create(data=DATA)

$order  = $client->order->create([
  'receipt'         => 'order_rcptid_11',
  'amount'          => 50000, // amount in the smallest currency unit
  'currency'        => 'USD'// <a href="/docs/payments/international-payments/#supported-currencies" target="_blank">See the list of supported currencies</a>.)
]);

Dictionary<string, object> options = new Dictionary<string,object>();
options.Add("amount", 50000); // amount in the smallest currency unit
options.add("receipt", "order_rcptid_11");
options.add("currency", "USD");
Order order = client.Order.Create(options);

options = amount: 50000, currency: 'USD', receipt: '<order_rcptid_11>'
order = Razorpay::Order.create

var options = {
  amount: 50000,  // amount in the smallest currency unit
  currency: "USD",
  receipt: "order_rcptid_11"
};
instance.orders.create(options, function(err, order) {
  console.log(order);
});

{
    "id": "order_DBJOWzybf0sJbb",
    "entity": "order",
    "amount": 50000,
    "amount_paid": 0,
    "amount_due": 50000,
    "currency": "USD",
    "receipt": "rcptid_11",
    "status": "created",
    "attempts": 0,
    "notes": [],
    "created_at": 1566986570
}

var data = {
  callback_url: 'https://www.examplecallbackurl.com/',
  amount: 1000, // in currency subunits.
  currency: "USD",
  email: '<email>',
  contact: '<phone>',
  method: 'ach',
  billing_address: 'Block street, San Jose, California',
  bank_account: {
        account_number: "4649986523",
        account_type: "business_checking",
        bank_code_category: "routing_number",
        bank_code: "011000138",
        name: "<name>"
  },
  order_id: 'order_CuEzONfnOI86Ab',
};

var btn = document.querySelector('#btn');
btn.addEventListener('click', function(){
  // has to be placed within user initiated context, such as click, in order for popup to open.
  razorpay.createPayment(data);

})

var data = {
  amount: 1000, // in currency subunits.
  currency: "USD",
  email: '<email>',
  contact: '<phone>',
  method: 'ach',
  billing_address: 'Block street, San Jose, California',
  bank_account: {
        account_number: "4649986523",
        account_type: "business_checking",
        bank_code_category: "routing_number",
        bank_code: "011000138",
        name: "<name>"
  },
  order_id: 'order_CuEzONfnOI86Ab',
};

var btn = document.querySelector('#btn');
btn.addEventListener('click', function(){
  // Ensure 'razorpay' is initialized before this point
  razorpay.createPayment(data);

  razorpay.on('payment.success', function(resp) {
    alert(resp.razorpay_payment_id);
    alert(resp.razorpay_order_id);
    alert(resp.razorpay_signature);
  });

  razorpay.on('payment.error', function(resp){
    alert(resp.error.description);
  });
});