lab completed

StringParser.java

@@ -15,7 +15,8 @@ public class StringParser
      */
     public static String upperCaseString(String s)
     {
-        return null;
+        String result = s.toUpperCase();
+        return result;
     }
 
     /**
@@ -26,7 +27,8 @@ public class StringParser
      * @return String
      */
     public static String lowerCaseString(String s) {
-        return null;
+        String result = s.toLowerCase();
+        return result;
     }
 
     /**
@@ -37,7 +39,7 @@ public class StringParser
      * @return String
      */
     public static Character getFirstCharacter(String s) {
-        return null;
+        return s.charAt(0);
     }
 
     /**
@@ -49,7 +51,7 @@ public class StringParser
      * @return String
      */
     public static Character getNthCharacter(String s, Integer n) {
-        return null;
+        return s.charAt(n);
     }
 
     /**
@@ -60,7 +62,7 @@ public class StringParser
      * @return String
      */
     public static String upperCaseFirstCharacter(String s) {
-        return null;
+        return s.substring(0,1).toUpperCase() + s.substring(1);
     }
 
     /**
@@ -72,8 +74,14 @@ public class StringParser
      * @return String
      */
     public static String camelCaseString(String s) {
-        return null;
-    }
+        StringBuilder newStr = new StringBuilder();
+        String[] array = s.split(" ");
+            for (int i=0;i<array.length;i++){
+                s = array[i].substring(0, 1).toUpperCase() + array[i].substring(1).toLowerCase();
+                newStr.append(s);
+            }
+        return newStr.toString();
+}
 
     /**
      * Takes a String and returns that string with each character lowercased
@@ -84,7 +92,10 @@ public class StringParser
      * @return String
      */
     public static String snakeCaseString(String s) {
-        return null;
+        s = s.toLowerCase();
+        String[] array = s.split("\\ ");
+        String joined = String.join("_",array);
+        return joined;
     }
 
     /**
@@ -95,7 +106,7 @@ public class StringParser
      * @return String
      */
     public static Integer getLength(String s) {
-        return null;
+        return s.length();
     }
 
     /**
@@ -109,7 +120,7 @@ public class StringParser
      * @return String
      */
     public static Boolean isEqual(String s1, String s2) {
-        return null;
+        return s1.equals(s2);
     }
 
     /**
@@ -123,6 +134,6 @@ public class StringParser
      * @return String
      */
     public static Boolean isEqualIgnoreCase(String s1, String s2) {
-        return null;
+        return s1.equalsIgnoreCase(s2);
     }
 }

package.bluej

@@ -3,16 +3,16 @@ dependency1.from=StringParserTest
 dependency1.to=StringParser
 dependency1.type=UsesDependency
 editor.fx.0.height=722
-editor.fx.0.width=800
-editor.fx.0.x=455
-editor.fx.0.y=51
+editor.fx.0.width=1040
+editor.fx.0.x=400
+editor.fx.0.y=123
 objectbench.height=164
 objectbench.width=776
 package.divider.horizontal=0.6
 package.divider.vertical=0.6845018450184502
 package.editor.height=364
 package.editor.width=674
-package.editor.x=0
+package.editor.x=288
 package.editor.y=23
 package.frame.height=600
 package.frame.width=800