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In the scolding lecture, we are going to use all the loops we went through in the previous video first

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while then do while for loop, then continue and break.

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And finally, we take an example for a for loop in a full loop.

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We're going to use Bart Simpson's punishment as an example.

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So let's do it first.

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Let's create a new class for this.

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Right.

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Click on one of the files here.

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You Java class loops up, copied the main method from one of the files you have been created.

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Copy and paste it here, it entered the other curly brace.

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OK, let's start with wild.

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So as I said, we are going to need a variable outside of the loop.

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Call it I and I equals one and a semicolon.

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By the way, we use letters for such variables because they don't have any exact meaning.

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They just helping to run our code five or fifty or a hundred times next to the wire.

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And in the parentheses, I should be less than or equal to let's use five here instead of a hundred,

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then curly braces enter system that order print double quotes.

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Being right sucks, one very important thing here is to increase the value of I won, so I lost plus

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and a semicolon, I think it would be useful to use I and added to the text just to see how many lines

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we printed out.

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So

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I plus.

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A dot and the space here also print out the value of eye after the loop.

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So.

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Double quotes, well, you have a colon plus I let's add a blank line to.

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The latest now round the code.

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All right, being socks printed out five times and the value of I is six, because that's one, Java

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stopped executing the loop.

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Great, it works as it should.

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Now, let's do it with the wire loop.

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Now we have to create a new variable for this.

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Let's call it J and J equals one and a semicolon, starting with the curly braces computer code from

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about.

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Paste it here.

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Change the variable name to Jay and here to now wild parentheses, Jay, less than or equal to five

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and a semicolon here copied these lines to pasted it here.

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Change the text and the variable name to run the code, brilliant.

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Same result now change the five to zero and both loops.

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So here.

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And here now, we're on the road again.

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Nice.

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So as I said, while check the condition first, and if it's false, Java doesn't execute the loop in

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the case of do while it runs the code first, then checks the condition.

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You can leave it as it is or you can change it back.

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It's totally up to you.

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Now, let's move on to for loop, we don't need an external variable here, so for parentheses and I

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equals one and a semicolon and we get an error message here.

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Variable I is already defined in the scope, so I has already been defined outside of this.

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So let's use another variable name.

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OK, now, OK, should be less than or equal to five, then a semicolon and Kate plus plus then curly

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braces hit, enter and copy.

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This line.

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To hear change the variable name Touquet, and that's it, now compare these lines to copy and paste

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it here, change the text Touquet and variable name as well.

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OK, so what's the problem here, it says cannot resolve symbolic, it's right because K is only accessible

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inside the loop.

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So delete that line and run the code.

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Everything is fine, the Texas printed out five times, move on, continue and break and use our fresh

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and crisp for loop at and if.

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Here, parentheses and K equals free curly braces and continue keyword now run the code again.

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So as you can see, the third step is missing Snice.

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Now replace the continue with break.

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And run the code again.

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Now, as you can see, the execution stopped at the third step and two lines are printed out.

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Last, let's do a bit weird thing, put a loop into another loop, copied a for loop.

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And remove the F from it.

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Now, copy it again.

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And posted here instead of the system that our DOT printed on.

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Now, as you can see, we should change the key here.

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Because it's already used, so let's rename it to out here to.

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And here change the printed out text to so double quotes, OK, because.

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Then a plus an.

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Space of equals plus L and the plus sign again.

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And later, that changed the condition of Al from five to two.

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Now let's run our code.

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So the value of K and L is one than the inner loop is executed again and the value of L is increased

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to two, then the value of K is increased by one.

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And then the inner loop starts from the beginning.

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And this goes on and on and on.

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Finally, the text is printed out ten times.

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We will definitely use loops later for more complex tasks, if you have any questions, feel free to

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ask me.

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Soon the next lecture.