Loops

Here is the code from the code example.

package examples.b_loop;

public class BasicLoop {
    public static void main(String[] args) throws Exception {
        for (int i=0; i < 5; i++) {
            System.out.println("Hello, World! " + i);
        }
    }
}

Remember how we did loops in python? for i in range(0, 5) Does that look familiar? What would this do?

Hello World! 0
Hello World! 1
Hello World! 2
Hello World! 3
Hello World! 4

Lets break this down.

• int i=0; this creates a variable of type int called i, and starts it at 0
• i < 5; like in the last part of range, this is the condition for how much we loop
• i++; is a bit of math. It is like i = i + 1; We are incrementing the variable i by one;

Try and make some different loops.

1. Can you start at 5 and stop at 10?
2. Can you start at 10 and stop at 0?
3. Can you start at 0 and stop at 10 but count by 2?

Time to make some decisions