Java tutorial #1 Reading a file with FileInputStream

Firstly, we will have to create a main method, that throws an IOException in case of an error(File not found...)

public static void main(String[] args) throws IOException

Then, the actual InputStream object will have to be created.

InputStream f = new FileInputStream("steemit.txt");

Note: you will have to create a file "steemit.txt" in your java folder. In case you are using eclipse like me, it will look like this:

Now we are coming to the main part which looks like this

int content;
        while((content = f.read()) != -1)
            System.out.print((char)content);

It basically says that the file gets read and printed out as long as it's not the end of the file(-1). Now that the FileInputStream returns the byte and not the current character we are reading, we add a cast (char) so we can read it's output.

The final code looks like:

public class Filewrite4_3 {
    
    public static void main(String[] args) throws IOException{
        
        
        InputStream f = new FileInputStream("steemit.txt");
        
        int content;
        while((content = f.read()) != -1)
            System.out.print((char)content);
        
    }

}

And the output (In my case) is "Java Rocks!"

Stay tuned!