Adding Currency Convertor example

currency-convertor/currency-convertor/.gitignore

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+target/
+!.mvn/wrapper/maven-wrapper.jar
+!**/src/main/**/target/
+!**/src/test/**/target/
+
+### IntelliJ IDEA ###
+.idea/modules.xml
+.idea/jarRepositories.xml
+.idea/compiler.xml
+.idea/libraries/
+*.iws
+*.iml
+*.ipr
+
+### Eclipse ###
+.apt_generated
+.classpath
+.factorypath
+.project
+.settings
+.springBeans
+.sts4-cache
+
+### NetBeans ###
+/nbproject/private/
+/nbbuild/
+/dist/
+/nbdist/
+/.nb-gradle/
+build/
+!**/src/main/**/build/
+!**/src/test/**/build/
+
+### VS Code ###
+.vscode/
+
+### Mac OS ###
+.DS_Store

currency-convertor/currency-convertor/pom.xml

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+<?xml version="1.0" encoding="UTF-8"?>
+<project xmlns="http://maven.apache.org/POM/4.0.0"
+         xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
+         xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
+    <modelVersion>4.0.0</modelVersion>
+
+    <groupId>org.example</groupId>
+    <artifactId>CurrencyConverter2</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <dependencies>
+        <dependency>
+            <groupId>com.squareup.okhttp3</groupId>
+            <artifactId>okhttp</artifactId>
+            <version>4.10.0</version>
+        </dependency>
+        <dependency>
+            <groupId>org.json</groupId>
+            <artifactId>json</artifactId>
+            <version>20220924</version>
+        </dependency>
+    </dependencies>
+
+    <properties>
+        <maven.compiler.source>11</maven.compiler.source>
+        <maven.compiler.target>11</maven.compiler.target>
+    </properties>
+
+</project>

currency-convertor/currency-convertor/src/main/java/com/currencyconvertor.java

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+package com;
+
+import okhttp3.OkHttpClient;
+import okhttp3.Request;
+import okhttp3.Response;
+import org.json.JSONObject;
+
+import java.io.IOException;
+import java.math.BigDecimal;
+import java.util.Scanner;
+
+public class currencyconvertor {
+
+    public static void main(String[] args) throws IOException {
+
+        Scanner scanner = new Scanner(System.in);
+        System.out.println("Type currency to convert from");
+        String convertFrom = scanner.nextLine();
+        System.out.println("Type currency to convert to");
+        String convertTo = scanner.nextLine();
+        System.out.println("Type quantity to convert");
+        BigDecimal quantity = scanner.nextBigDecimal();
+
+        String urlString = "https://www.frankfurter.app/latest?from=" + convertFrom.toUpperCase();
+
+
+        OkHttpClient client = new OkHttpClient();
+        Request request = new Request.Builder()
+                .url(urlString)
+                .get()
+                .build();
+
+        Response response = client.newCall(request).execute();
+        String stringResponse = response.body().string();
+        JSONObject jsonObject = new JSONObject(stringResponse);
+        JSONObject ratesObject = jsonObject.getJSONObject("rates");
+        BigDecimal rate = ratesObject.getBigDecimal(convertTo.toUpperCase());
+
+        BigDecimal result = rate.multiply(quantity);
+        System.out.println(result);
+
+    }
+}

currency-convertor/currency-convertor/src/main/java/org/example/Main.java

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+package org.example;
+
+//TIP To <b>Run</b> code, press <shortcut actionId="Run"/> or
+// click the <icon src="AllIcons.Actions.Execute"/> icon in the gutter.
+public class Main {
+    public static void main(String[] args) {
+        //TIP Press <shortcut actionId="ShowIntentionActions"/> with your caret at the highlighted text
+        // to see how IntelliJ IDEA suggests fixing it.
+        System.out.printf("Hello and welcome!");
+
+        for (int i = 1; i <= 5; i++) {
+            //TIP Press <shortcut actionId="Debug"/> to start debugging your code. We have set one <icon src="AllIcons.Debugger.Db_set_breakpoint"/> breakpoint
+            // for you, but you can always add more by pressing <shortcut actionId="ToggleLineBreakpoint"/>.
+            System.out.println("i = " + i);
+        }
+    }
+}