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‫Welcome back.

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‫Now that you know how to read from a file, let's go ahead and write a file as well.

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‫So what I'm going to do is I'm going to comment all the code out until there actually.

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‫So here like that.

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‫And on top of that, I'm going to go ahead and add the writing stuff.

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‫So I'm going to start with a string array, which I'm going to call lines because there are two ways

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‫of writing into your file as well.

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‫You can write by line or you can simply write a string into a file.

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‫And we're going to start with the array type or with the different lines.

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‫So I create multiple different lines and I'm going to start with the first line, then I'm going to

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‫create a second line.

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‫And finally the third line, just like that.

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‫And now I can write that onto a file and that will be done with the file class again, and you can either

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‫import it at the top.

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‫So using actually we can do it this way.

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‫We haven't done it last time system, dot io dot file or actually like that file or maybe even just

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‫the IO, let's just import the IO and now we can use file the file class and we can write all lines.

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‫And here we need two different arguments.

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‫One is the path and one is the contents, which is you can see is an array of strings.

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‫So the path I'm going to use the same path as we did last time.

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‫So I'm just going to copy that.

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‫And then I need the lines in our case.

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‫It's just those lines.

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‫An array of strings.

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‫Right.

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‫So that's how I can write into a file or I can create a file, and I'm going to write into a text file,

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‫too.

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‫So let's start that and also let's check out the location here.

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‫So this is our folder and as you can see, it created a file too.

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‫So let's check it out.

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‫And there we are.

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‫First line, second line, third line.

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‫All right.

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‫So now you know how to write and how to read from a file.

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‫So now go ahead and write the high score of three users into an array.

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‫Go ahead and please try that.

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‫All right.

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‫So the first one, the first high score, let's say, was 250.

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‫Then the second high score will be 242.

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‫And then we have 240.

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‫So these are high scores and I'm going to store that in high scores.

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‫Dot text.

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‫Now let's create that.

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‫So you see, this is the console.

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‫Nothing too fancy going on in the console.

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‫And now the assets folder.

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‫And there you see high scores were created.

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‫So now you could go ahead and read from that file and well read by line and then update your game where

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‫you display the high scores.

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‫All right.

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‫So now there is another way, because this way we are just writing a whole well set of lines and now

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‫we just write a text.

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‫So let's go ahead and create a text string, which is going to be input and that will be console that

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‫read line.

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‫So we just more actually read as fine as well.

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‫So we're just going to read whatever the user has entered and now I want to write that into my file.

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‫So file dot and as you can see, we have those right methods here as well.

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‫So we use the read methods, read all lines and read text and now we're going to use right all text.

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‫So I'm going to write all text into a path and I'm just going to copy the path here like that.

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‫And by the way, you can use something like that plus and here.

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‫Let's create one like this.

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‫So this one will be file name.

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‫So we're going to add the file name.

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‫Plus txt.

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‫So dot txt.

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‫And then we need the contents.

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‫So the contents will be input like that.

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‫So let's inform the user as well that you can enter a text.

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‫So I'm going to say c w please give the file a name.

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‫And now the next one will be c w.

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‫Please enter the text for the file.

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‫And that will be the input of the user.

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‫All right.

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‫So now let's write that into the console.

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‫Please give a file name I'm going to call it test file is enter the text for the file.

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‫Hi there.

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‫This is a test.

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‫And we enter and we enter again.

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‫There we are.

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‫So now let's check it out.

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‫Let's see if the test file was created.

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‫There we are.

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‫Test file is created.

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‫And you see.

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‫Hi there.

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‫This is a test.

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‫So you can see how you can create test text files quite easily, even using the user or the file name

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‫yourself.

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‫So we created an own file here.

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‫All righty.

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‫So these are two ways of writing into a file or writing into a text file.

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‫So method one and that one is method two.

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‫And now there is actually a method three.

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‫So method three.

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‫And that is to use a stream writer.

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‫So using system dot IO, which we already had, so we can go ahead and create the stream writer functionality.

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‫So Stream Writer File is going to be a new stream writer.

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‫And in here I need to enter the location.

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‫So I'm going to use that one here, the path.

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‫So I'm going to enter the path and this time I'm going to call it my text, something like that.

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‫Now what we need to do is to actually write something on it.

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‫And I'm going to read through or go through every single line that we have here with the for each group

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‫and going to write it into my console, but only if it contains the word third.

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‫All right.

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‫So let's go ahead for each string line in lines.

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‫And here should be line, of course.

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‫So if line dot contains.

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‫The word third.

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‫So only if the line contains the word third.

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‫Then I want to go ahead and write the line into the file.

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‫All right.

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‫So let's check it out.

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‫This one was third, right?

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‫So I'm going to add third in here, third, 242nd like that.

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‫And then that one was first.

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‫So I only want to write into the file if there was a word third in that specific line that we're looking

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‫at.

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‫And now the cool thing with the Stream writer is that it opens and it closes as required.

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‫So we don't need to do all of that manually.

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‫So now let's run it again.

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‫And actually we need to give a new file, a name, new file.

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‫Well, let's do it that way.

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‫Let's get rid of our second method for now, because otherwise it will force us to put something in.

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‫And here we are now we can actually check our assets and we see my text was created.

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‫So that's the third file on this file here.

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‫My text, I'll text, let's open it up and we see only third was given here, so only third was printed

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‫into that file.

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‫So you can do something like using a lines and then checking if they have a specific content.

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‫So this is one of the methods to check for content.

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‫And this is here line, which is the particular line that we're currently looking at in all of our lines.

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‫And then we check if it contains the term third.

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‫And if it does well, then please go ahead and write it and otherwise don't write it.

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‫So we could create another text called Well actually try yourself create another text which is called

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‫my text two and it should only write the lines that contain the two, which contain a two in their name.

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‫All right.

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‫I hope you tried it.

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‫So this one and it's going to be my text, too.

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‫And line contains a two.

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‫And now let's write or let's run the code again and I'm going to close the straight away so you can

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‫go to ah my text two, which is the new file and as you can see all the lines were written.

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‫And why is that?

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‫Well because all of them contain a two.

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‫So if you would also want to only have the ones with a four, then you could only get second and third

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‫into a file or written to a file.

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‫So what if you want to add something to that file?

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‫So add text to the file.

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‫Well, then you can simply go ahead and go as follows.

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‫So we're going to create a new line of code here called Using Stream Writer,

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‫and it's going to be a file that I'm creating.

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‫And that file should be a new stream writer.

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‫And then here I give the path again like we had before.

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‫So the argument is going to be a path and the second one is going to be a true so boolean.

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‫What that will allow us to do is to write onto our file.

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‫So file, dot, right line and I'm going to say something like additional line like that.

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‫So now let's run it again.

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‫And let's check out our file.

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‫My text, too.

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‫And we see additional line was printed to it so that you could go ahead and write all the different

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‫scores that players have created, have made or had.

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‫And you can file, write them all into a file or whatever you want.

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‫You can write it into your file now, and that's pretty cool.

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‫All right.

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‫So now you know how to read and write files, which are text files.