Program to read a file in java line by line

Below is the scanner example to read file line by line and print it. Files is a utility class that contains various useful methods. Files readAllLines method can be used to read all the file lines into a list of string. We can use RandomAccessFile to open a file in read mode and then use its readLine method to read file line by line. SO what im trying to do is reading each line from a file named fileName and writing it into a new file named fileName2 , so basically a copier.

How would you do that? Is there a way to read a specific line from a file without first reading all previous lines if you know the line length? I write a file handling program, I read data from file. In a file a create a table name,age,clg when I read data,I get data with column name but I want only data nat file name please suggest me how can do. Thanks for your tutorials. Is there a way to grab each individual line and assign it to a variable? I tried this and I get the first line on the first line1 string with the rest as nulls.

Conclusion In this article, we have seen all the different ways to read a text or json file line by line. Shown example programs in the following classes. Do you think which method is efficient to read the file? Please tell your answer in the comments and also please post your questions.

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Ethical Hacking. Computer Graphics. Software Engineering. Web Technology. Hello Geek!!! It is the easiest way to read input in a Java program, though not very efficient if you want an input method for scenarios where time is a constraint like in competitive programming. Scanner class is used to read the large file line by line. A Scanner breaks its input into tokens, which by default matches the whitespace.

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