docs(Others): update countwords.java and crc32.java

- By @yanglbme

Others/countwords.java

@@ -1,26 +1,26 @@
 import java.util.Scanner;
 
 /**
- * You enter a string into this program, and it will return how
- * many words were in that particular string
- * 
- * @author Marcus
+ * You enter a string into this program, and it will return how many words were
+ * in that particular string
  *
+ * @author Marcus
  */
-  public class countwords{
+public class CountWords {
 
-	public static void main(String[] args){
-	  Scanner input = new Scanner(System.in);
-          System.out.println("Enter your text: ");
-          String str = input.nextLine();
-          
-          System.out.println("Your text has " + wordCount(str) + " word(s)"); 
-	  input.close();
-        } 
+  public static void main(String[] args) {
+    Scanner input = new Scanner(System.in);
+    System.out.println("Enter your text: ");
+    String str = input.nextLine();
 
-        private static int wordCount(String s){
-          if(s.isEmpty() || s == null) return 0;
-          return s.trim().split("[\\s]+").length;
-        }
-        
+    System.out.println("Your text has " + wordCount(str) + " word(s)");
+    input.close();
   }
+
+  private static int wordCount(String s) {
+    if (s == null || s.isEmpty())
+      return 0;
+    return s.trim().split("[\\s]+").length;
+  }
+
+}