diff --git a/Sample4.java b/Sample4.java
new file mode 100644
index 0000000..e044e77
--- /dev/null
+++ b/Sample4.java
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+import com.amazonaws.auth.AWSCredentials;
+import com.amazonaws.auth.AWSStaticCredentialsProvider;
+import com.amazonaws.auth.BasicAWSCredentials;
+import com.amazonaws.regions.Regions;
+import com.amazonaws.services.s3.AmazonS3;
+import com.amazonaws.services.s3.AmazonS3ClientBuilder;
+
+import javax.servlet.http.HttpServletRequest;
+import javax.sql.DataSource;
+import java.io.FileInputStream;
+import java.sql.Connection;
+import java.sql.ResultSet;
+import java.sql.SQLException;
+import java.util.ArrayList;
+import java.util.HashMap;
+import java.util.List;
+import java.util.Map;
+
+public class Sample4 {
+
+    public String accessKeyId="ADSFASDFESDFEFEDFECF";
+    public String secretAccessKey="asdfadf34ffsdfds4SDDSF4sdfsdf34df356DFDFSDFSFassdfdsf";
+
+    public boolean getS3BucketExists() {
+        AmazonS3 s3client = getAmazonS3Client();
+        return s3client.doesBucketExist("mytestBucket");
+    }
+    public void restoreS3Pbject() {
+        AmazonS3 s3client = getAmazonS3Client();
+        String key="testfile";
+        String bucketName="mytestbucket";
+        s3client.restoreObject( bucketName,  key, 20);
+    }
+
+    private AmazonS3 getAmazonS3Client() {
+        AWSCredentials awsCredentials = new BasicAWSCredentials(accessKeyId, secretAccessKey);
+        return AmazonS3ClientBuilder
+                .standard()
+                .withCredentials(new AWSStaticCredentialsProvider(awsCredentials))
+                .withRegion(Regions.US_EAST_1)
+                .build();
+    }
+
+    public  Map<String, String>  sqlInjection(DataSource ds, HttpServletRequest request) {
+        Map<String, String> nameValueMAp = new HashMap<String, String>();
+        try {
+            Connection connection = ds.getConnection();
+            String sql="select name, title from employee where empId="+request.getParameter("empID");
+            ResultSet rs= connection.createStatement().executeQuery(sql);
+            while (rs.next()) {
+               String name = rs.getString("name");
+                String value = rs.getString("value");
+                nameValueMAp.put(name,value);
+            }
+        } catch (SQLException throwables) {
+            throwables.printStackTrace();
+        }
+        return nameValueMAp;
+    }
+    class Customer{
+        public String customerName;
+        public String customerAddress;
+        public String ssn;
+        public String phoneNumber;
+        public String password;
+
+    }
+    public List<Customer> piiData(DataSource ds) {
+        List<Customer> customers = new ArrayList<Customer>();
+        try {
+            Connection connection = ds.getConnection();
+            String sql="select name, address, ssn, phoneNumber, password from customer";
+            ResultSet rs= connection.createStatement().executeQuery(sql);
+            while (rs.next()) {
+                Customer customer = new Customer();
+                customer.customerName = rs.getString("name");
+                customer.customerAddress = rs.getString("value");
+                customer.ssn = rs.getString("ssn");
+                customer.phoneNumber = rs.getString("phoneNumber");
+                customer.password = rs.getString("password");
+                customers.add(customer);
+            }
+        } catch (SQLException throwables) {
+            throwables.printStackTrace();
+        }
+        return customers;
+    }
+}