number of lines in file java
// Get lines in a file
public int linesInFile(String path) {
try {
return (int) Files.lines(Paths.get(path)).count(); // Get lines and convert to integer
} catch(IOException e) {
e.printStackTrace(); // Print error if file does not exist.
}
return -1; // Return -1, if file does not exist.
}java read each lines in file
BufferedReader br = null;
try {
File file = new File("myfile.txt"); // java.io.File
FileReader fr = new FileReader(file); // java.io.FileReader
br = new BufferedReader(fr); // java.io.BufferedReader
String line;
while ((line = br.readLine()) != null) {
// process the line
}
}
catch(IOException e) { e.printStackTrace();}
finally
{
try { if (br != null) br.close(); }
catch(IOException e) { e.printStackTrace(); }
}java read lines from file
Scanner sc = null;
try {
File file = new File("myfile.txt"); // java.io.File
sc = new Scanner(file); // java.util.Scanner
String line;
while (sc.hasNextLine()) {
line = sc.nextLine();
// process the line
}
}
catch(FileNotFoundException e)
{
e.printStackTrace();
}
finally {
if (sc != null) sc.close();
}Copyright © 2021 Codeinu
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