Java for Testers #37 - How to Read Data from CSV and Text File in Java

In this Java for Testers tutorial we will learn how to Read Data from CSV and Text File in Java. Java library comes with File, FileReader and BufferedReader classes which can be utilized to read data from any CSV or text file.

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[liningca]

Print all lines in the file:
File f = new
FileReader fr = new FileReader(f);
BufferedReader br = new BufferedReader(fr);
// 1).find out file's line #: Files.lines(path, StandardCharsets.UTF_8)
long lines;
try (Stream<String> stream = Files.lines(f.toPath(), StandardCharsets.UTF_8)) {
lines = stream.count();
}
System.out.println("Line # "+lines);
// 2).Print out all lines:
int i=0;
while(i<lines)
{


}
System.out.println("Read successfully");
br.close();

[swapnabhaskaruni]

without using flush() method, the contents of the buffer are not getting written to file. is it mandatory to use flush()

[amitapuranik]

How to verify particular cell in the text file for example [1][3] first row third column?