WhileStatements.java

package integrationTests.loops;

public class WhileStatements
{
   void whileBlockInSeparateLines()
   {
      int i = 0;

      while (i < 5) {
         i++;
      }
   }

   void whileBlockInSingleLine(int i) {
      while (i < 2) i++;
   }

   int whileWithContinue(int i)
   {
      while (i < 2) {
         if (i == 1) {
            i = 3;
            continue;
         }

         i++;
      }

      return i;
   }

   int whileWithBreak(int i)
   {
      while (i < 2) {
         if (i == 1) {
            break;
         }

         i++;
      }

      return i;
   }

   void nestedWhile(int i, int j)
   {
      while (j < 2) {
         while (i < j) {
            i++;
         }

         j++;
      }
   }

   void doWhileInSeparateLines()
   {
      int i = 0;

      do {
         i++;
      } while (i < 3);
   }

   void bothKindsOfWhileCombined(int i, int j)
   {
      while (true) {
         do {
            i++;
         }
         while (i < j);

         j++;

         if (j >= 2) {
            return;
         }
      }
   }

   void whileTrueEndingWithAnIf(int i)
   {
      while (true) {
         i++;

         if (i >= 2)
            return;
      }
   }

   void whileTrueStartingWithAnIf(int i)
   {
      while (true) {
         if (i >= 2) {
            return;
         }

         i++;
      }
   }

   void whileTrueWithoutExitCondition()
   {
      while (true) { doSomething(); }
   }

   void whileTrueContainingTryFinally()
   {
      while (true) {
         try { doSomething(); }
         finally { doNothing(); }
      }
   }

   private static void doSomething() { throw new IllegalStateException(); }
   private static void doNothing() {}

   int whileWithIfElse(int i)
   {
      while (i <= 2) {
         if (i % 2 == 0) {
            System.out.println("even");
         }
         else {
            System.out.println("odd");
         }

         i++;
      }

      return i;
   }
}