package com.ib.client.examples;
import com.ib.client.Contract;
import com.ib.client.TickType;
/**
* Simple example which will pull the last price for a given symbol.
*
* API requests:
* eConnect
* reqMktData (snapshot)
* eDisconnect
*
* API callbacks:
* tickPrice
*
* $Id$
*/
public class Example1 extends ExampleBase {
private String symbol = null;
private int requestId = 0;
private double lastPrice = 0.0;
public Example1(String symbol) {
this.symbol = symbol;
}
public static void main(String[] args) {
if (args.length != 1) {
System.out.println(" Usage: java Example1 <symbol>");
System.exit(1);
} else {
new Example1(args[0]).start();
}
}
public void run() {
try {
boolean isSuccess = false;
int waitCount = 0;
// Make connection
connectToTWS();
// Create a contract, with defaults...
Contract contract = createContract(symbol, "STK", "SMART", "USD");
// Requests snapshot market data
eClientSocket.reqMktData(requestId++, contract, null, true);
while (!isSuccess && waitCount < MAX_WAIT_COUNT) {
// Check if last price loaded
if (lastPrice != 0.0) {
isSuccess = true;
}
if (!isSuccess) {
sleep(WAIT_TIME); // Pause for 1 second
waitCount++;
}
}
// Display results
if (isSuccess) {
System.out.println(" [Info] Last price for " + symbol + " was: " + lastPrice);
} else {
System.out.println(" [Error] Failed to retrieve last price for " + symbol);
}
} catch (Throwable t) {
System.out.println("Example1.run() :: Problem occurred during processing: " + t.getMessage());
} finally {
disconnectFromTWS();
}
}
public void tickPrice(int tickerId, int field, double price, int canAutoExecute) {
if (field == TickType.LAST) {
lastPrice = price;
}
}
}