add examples

+<?xml version="1.0" encoding="UTF-8"?>
+<module type="JAVA_MODULE" version="4" />
\ No newline at end of file

+<?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>1.0.0</modelVersion>
+
+    <groupId>cesco</groupId>
+    <artifactId>Detecting_fraud_clicks</artifactId>
+    <version>1.0-SNAPSHOT</version>
+
+    <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-core -->
+    <dependencies>
+        <!-- https://mvnrepository.com/artifact/org.apache.spark/spark-core -->
+        <dependency>
+            <groupId>org.apache.spark</groupId>
+            <artifactId>spark-core_2.11</artifactId>
+            <version>2.3.0</version>
+        </dependency>
+
+    </dependencies>
+    
+</project>
\ No newline at end of file

+import org.apache.spark.SparkConf;
+import org.apache.spark.api.java.JavaRDD;
+import org.apache.spark.api.java.JavaSparkContext;
+import scala.Tuple2;
+
+import java.util.Arrays;
+import java.util.List;
+
+public class MapExample {
+
+    static SparkConf conf = new SparkConf().setMaster("local[*]").setAppName("Cesco");
+    static JavaSparkContext sc = new JavaSparkContext(conf);
+    
+    public static void main(String[] args) throws Exception {
+        
+        // Parallelized with 2 partitions
+        JavaRDD<String> x = sc.parallelize(
+                Arrays.asList("spark", "rdd", "example", "sample", "example"),
+                2);
+
+        // Word Count Map Example
+        JavaRDD<Tuple2<String, Integer>> y1 = x.map(e -> new Tuple2<>(e, 1));
+        List<Tuple2<String, Integer>> list1 = y1.collect();
+
+        // Another example of making tuple with string and it's length
+        JavaRDD<Tuple2<String, Integer>> y2 = x.map(e -> new Tuple2<>(e, e.length()));
+        List<Tuple2<String, Integer>> list2 = y2.collect();
+        
+        System.out.println(list1);
+    }
+}

+public class valid {
+    private int x;
+    
+    valid() {
+        x = 0;
+    }
+    
+    void printX(){
+        System.out.println(x);
+    }
+    
+    public static void main(String[] args){
+        valid v = new valid();
+        v.printX();
+    }
+    
+}

+public class testValid {
+    
+}