diff --git a/src/main/java/io/zipcoder/Problem1.java b/src/main/java/io/zipcoder/Problem1.java
index 6cd6024..d14f40b 100644
--- a/src/main/java/io/zipcoder/Problem1.java
+++ b/src/main/java/io/zipcoder/Problem1.java
@@ -1,4 +1,29 @@
 package io.zipcoder;
 
+
+import java.util.*;
+
 public class Problem1 {
+
+    Map<Character,Character> map=new HashMap<>();
+    String str = "The Farmer went to the store to get 1 dollar’s worth of fertilizer";
+    public void addMap(){
+        map.put('f','7');
+        map.put('s','$');
+        map.put('1','!');
+        map.put('a',"@".charAt(0));
+    }
+    public String replaceChar(){
+        for(Map.Entry<Character,Character> entry: map.entrySet()){
+            str = str.replace(entry.getKey(),entry.getValue());
+        }
+        return str;
+    }
+//    @Override
+//    public String toString(){
+//        return "name:" + name + " price:" + price + " type:" + type + " expiration:" + expiration;
+//
+//    }
+
+
 }
diff --git a/src/test/java/io/zipcoder/Problem1Test.java b/src/test/java/io/zipcoder/Problem1Test.java
index de82e99..ebf7163 100644
--- a/src/test/java/io/zipcoder/Problem1Test.java
+++ b/src/test/java/io/zipcoder/Problem1Test.java
@@ -1,4 +1,23 @@
 package io.zipcoder;
 
+import org.junit.Assert;
+import org.junit.Test;
+
+import java.util.HashMap;
+import java.util.Map;
+
 public class Problem1Test {
+    Problem1 problem = new Problem1();
+    @Test
+    public void testAddMap(){
+        problem.addMap();
+    }
+    @Test
+    public void testReplaceChar(){
+        problem.addMap();
+        problem.replaceChar();
+       String expected = "The 7@rmer went to the $tore to get ! doll@r’$ worth of 7ertilizer";
+       String actual= problem.replaceChar();
+        Assert.assertEquals(expected,actual);
+    }
 }