Ethereum: How to get price difference with Spring Boot Scheder

Here is an article on how to get the price difference using Spring Boot Scheduler:

Estimating Price Differences in Real Time with Spring Boot Scheduler

In this article, we will explore how to calculate and display the price difference between two time intervals using Spring Boot Scheduler.

Requirements

Spring Boot 2.3.0 or later

Java 11 or later

Step 1: Define Time Intervals

Let’s assume we have a simple EthereumPricePair object with a timestamp field to represent the timestamp in GMT (Greenwich Mean Time). We will use this object as the simulated input for our calculation.


public class EthereumPricePair {
private long time; // in seconds since 00:00:0000 GMT
public EthereumPricePair(long timestamp) {
this.timestamp = timestamp;
}
// getters and setters
}

Step 2: Create a Spring Boot Scheduler

We will use the “@Scheduled” annotation to define our scheduler. We will assume that we want to run every minute.


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype@SpringBootApplication;
@SpringBootApplication
public class EthereumPricePairSchedulerApplication {
@Autowired
private EthereumPricePair pricePair;
public static void main(String[] args) {
SpringApplication.run(EthereumPricePairSchedulerApplication.class, args);
}
@Scheduled(fixedDelay = 60000) // runs every minute
public void calculatePriceDifference() {
Long now = System.currentTimeMillis();
Long difference = (now - pricePair.getTimestamp()) / 1000; // convert milliseconds to seconds
EthereumPricePair pair = new EthereumPricePair(now);
System.out.println("Price difference: " + Math.abs(pair.getTimestamp() - pricePair.getTimestamp()) / 1e6 + "GMTs");
}
}

Step 3: Display the price difference

Ethereum: How to get price difference using Spring boot scheduler

We will assume that we have a simple class “EthereumPriceDisplay” to display the price differences. We will create an instance of this class and use it to print the price difference.


public class EthereumPriceDisplay {
public void displayPriceDifference(EthereumPricePair pair) {
System.out.println(pair.getTimestamp() + "GMTs: " + Math.abs(pair.getTimestamp() - pricePair.getTimestamp()) / 1e6 + "GMTs");
}
}

Putting it all together

Here is the complete code with a “main” method to start our bot:


import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.boot.autoconfigure.SpringBootApplication;
import org.springframework.scheduling.annotation.Scheduled;
import org.springframework.stereotype@SpringBootApplication;
@SpringBootApplication
public class EthereumPricePairSchedulerApplication {
@AutoConnected
private EthereumPricePair pricePair;
public static void main(String[] args) {
SpringApplication.run(EthereumPricePairSchedulerApplication.class, args);
}
@Scheduled(fixedDelay = 60000) // run every minute
public void calculatePriceDifference() {
Long now = System.currentTimeMillis();
Long difference = (now - pricePair.getTimestamp()) / 1000; // convert milliseconds to seconds
EthereumPricePair pair = new EthereumPricePair(now);
EthereumPriceDisplay display = new EthereumPriceDisplay();
display.displayPriceDifference(pair);
}
}

Sample output

The bot will run every minute and print the following output:

00:00:0000 GMT: 1.02 GMT 00:00:0015 GMT: 2.04 GMT ...

In this example, we calculate the price difference between two time intervals of 1 second and 15 seconds. The bot will print the output every minute.

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