JAVA 8 API

Instructions

• For each question, first THINK it through. Use paper.
• If uncertain, feel free to look online for help BEFORE programming anything.
• Once set on an answer/solution, program it/type in the code. See what happens.

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1. Write a Java class named Triangle that contains a method called draw() that displays the following pattern. 
Design the program in such a way that it will be easy to enlarge the pattern to 10 rows and 19 columns. 
Make sure your Provide a main(String[] args) within a program named TestTriangle to test your solution.
          *
         ***
        *****
       *******
      *********



2. What is printed after the following lines of code are executed? 
(THINK ABOUT THE ANSWER... come up with an answer, then test it.)
	
	int j = 0;
        for(int i = 0; i < 100; i++)       
            j = j++;        
        System.out.println("The value of j is: " + j);                   

		
So why is this?



3. Given the following code, what is printed? 
(DO NOT USE THE COMPUTER. Figure it out, test your answers.)

	int end  = Integer.MAX_VALUE;
        int start = end - 100;
        int loops = 1;
        for(int i = start; i <= end; i++)
        {
            System.out.println("loop: " + loops);
            loops++;
        }
        System.out.println("Value of loops: " + loops);


		
4. Given the following code, what is printed? 
(DO NOT USE THE COMPUTER. Figure it out, test your answers.)

	int end  = Integer.MAX_VALUE;
        int start = end - 100;
        int sum1 = 0; int sum2 = 0; int sum3 = 0;
        for(int i = start; i < end; i++)
        {
            System.out.println("loop: " + i);
            sum1 += (i-start);
            sum2 += (end - start);
            sum3 += (end - i);
        }
        System.out.println("Value of sum1: " + sum1);
        System.out.println("Value of sum2: " + sum2);
        System.out.println("Value of sum3: " + sum3);