Answer to Question #116303 in Java | JSP | JSF for Flores

Question

Here is a while loop that counts from 1 to 5 that demonstrates the 3 steps of writing a loop. Can you change it to count from 2 to 10? Can you make it count by 2s? Can you make it count backwards?public class LoopTest1
{
public static void main(String[] args)
{
// 1. initialize the loop variable
int count = 1;

// 2. test the loop variable
while (count <= 5)
{
System.out.println(count);
// 3. change the loop variable
count++;
}

Answer 1

count from 2 to 10:

public class LoopTest1 {
    public static void main(String[] args) {
    // 1. initialize the loop variable
        int count = 2;
        // 2. test the loop variable
        while (count <= 10) {
            System.out.println(count);
            // 3. change the loop variable
            count++;
        }
    }
}

count by 2s:

public class LoopTest1 {
    public static void main(String[] args) {
    // 1. initialize the loop variable
        int count = 1;
        // 2. test the loop variable
        while (count <= 5) {
            System.out.println(count);
            // 3. change the loop variable
            count+=2;
        }
    }
}

count backwards:

public class LoopTest1 {
    public static void main(String[] args) {
        // 1. initialize the loop variable
        int count = 5;
        // 2. test the loop variable
        while (count >= 1) {
            System.out.println(count);
            // 3. change the loop variable
            count--;
        }
    }
}