Writing to file in java using scanner

Scanner: It provides parsing ability. BufferedReader: The BufferReader reads the text from a character-input stream. It also did buffering for the reading of the characters, arrays, and the lines. Facebook Comments. Leave a Reply Cancel reply Your email address will not be published.

Related Articles. Check Also. The System. It works just like taking inputs from the keyboard. We have then used the nextLine method of the Scanner class to read a line of text from the user.

As we can see from the above example, we need to import the java. Scanner package before we can use the Scanner class.

To learn more about importing packages, visit Java Packages. Here, we have created objects of the Scanner class that will read input from InputStream , File , and String respectively. The Scanner class provides various methods that allow us to read inputs of different types. In the above example, we have used the nextDouble method to read a floating-point value. In the above example, we have used the next method to read a string from the user.

Here, we have provided the full name. However, the next method only reads the first name. This is because the next method reads input up to the whitespace character. Once the whitespace is encountered, it returns the string excluding the whitespace.

In the first example, we have used the nextLine method to read a string from the user. Unlike next , the nextLine method reads the entire line of input including spaces. Recommended Reading: Java Scanner skipping the nextLine. In the above example, we have used the java. BigInteger and java. The Scanner class reads an entire line and divides the line into tokens. This is necessary because it throws an IOException if an error occurs if the file cannot be created for some reason :.

Run Example ». In the following example, we use the FileWriter class together with its write method to write some text to the file we created in the example above. Note that when you are done writing to the file, you should close it with the close method:. We just launched W3Schools videos. Get certified by completing a course today!