StringParser.java

      */
     public static String upperCaseString(String s)
     {
-        return null;
+        String work= s.toUpperCase();
+        return work;
     }
 
     /**
      * @return String
      */
     public static String lowerCaseString(String s) {
-        return null;
+        String work = s.toLowerCase();
+        return work;
     }
 
     /**
      * @return String
      */
     public static Character getFirstCharacter(String s) {
-        return null;
+        char letter = s.charAt(0);
+        return letter;
     }
 
     /**
      * @return String
      */
     public static Character getNthCharacter(String s, Integer n) {
-        return null;
+        char letter = s.charAt(n);
+        return letter;
     }
 
     /**
      * @return String
      */
     public static String upperCaseFirstCharacter(String s) {
-        return null;
+        String fl= s.substring(0,1).toUpperCase()+s.substring(1);
+        return fl;
     }
 
     /**
      * @param s
      * @return String
      */
+
     public static String camelCaseString(String s) {
-        return null;
+        /* 
+         * Set string .toLowerCase()
+         * Split String
+         * Make first letter of each word .toUpperCase()
+         * Combine strings
+         */
+        String low= s.toLowerCase();
+        String[] space= low.split(" ");
+        String first= space[0];
+        String cap= first.substring(0,1).toUpperCase()+first.substring(1);
+        String second= space[1];
+        String cappy= second.substring(0,1).toUpperCase()+second.substring(1);
+
+        return cap+cappy;
     }
 
     /**
      * @return String
      */
     public static String snakeCaseString(String s) {
-        return null;
+        String lower = s.toLowerCase();
+        String underscore = lower.replaceAll(" ","_");
+        return underscore;
     }
 
     /**
      * @return String
      */
     public static Integer getLength(String s) {
-        return null;
+        int length= s.length();
+        return length;
     }
 
     /**
      * @return String
      */
     public static Boolean isEqual(String s1, String s2) {
-        return null;
+      if(s1==s2){
+        return true;
+    }else{
+        return false;
+    }
     }
 
     /**
      * @param s2
      * @return String
      */
-    public static Boolean isEqualIgnoreCase(String s1, String s2) {
-        return null;
+    public static Boolean isEqualIgnoreCase(String s1, String s2) {    
+         if(s1.toLowerCase().equals(s2.toLowerCase())){
+        return true;
+    }else{
+        return false;
+    }
     }
 }

package.bluej

 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.x=461
+editor.fx.0.y=25
 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.y=23
+package.editor.x=24
+package.editor.y=146
 package.frame.height=600
 package.frame.width=800
 package.numDependencies=1