方法一:使用BufferedReader和RandomAccessFile importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.IOException;importjava.io.RandomAccessFile;publicclassFileReadExample{publicstaticvoidmain(String[]arg
BufferedReader bufferedReader = new BufferedReader(new InputStreamReader(dataInputStream)); try { String next; while ((next = bufferedReader.readLine()) != null) { System.out.println( "===开始调用==="); workerDemo.working(next); System.out.println( "===结束调用===...
packagecom.journaldev.readfileslinebyline;importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.IOException;publicclassReadFileLineByLineUsingBufferedReader{publicstaticvoidmain(String[]args){BufferedReaderreader;try{reader=newBufferedReader(newFileReader("sample.txt"));Stringline=reader.readLine...
Following are the steps to read contents of a File line by line using BufferedReader: Step 1: Load the file into buffer of BufferedReader. </> Copy BufferedReader br = new BufferedReader(new FileReader(filename)); BufferedReader provides an efficient way of reading characters, lines and arra...
Use BufferedReaders. DON?T create static strings via new(). Use String.intern() to reduce the number of strings in your runtime. [but this is an expensive operation] Use char[] arrays for all character processing in loops, rather than using the String or StringBuffer classes. String...
The program executes the Windows Notepad application. It returns its exit code. Command output The following example executes a command and shows its output. Main.java import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; ...
A program can convert an unbuffered stream into a buffered stream using the wrapping idiom we've used several times now, where the unbuffered stream object is passed to the constructor for a buffered stream class. Here's how you might modify the constructor invocations in theCopyCharactersexample...
BufferedReader in = new BufferedReader( new InputStreamReader(fis)); BufferedWriter out = new BufferedWriter( new OutputStreamWriter(fos)); // The pattern matches control characters Pattern p = Pattern.compile("{cntrl}"); Matcher m = p.matcher(""); ...
import java.io.BufferedReader; import java.io.IOException; import java.io.InputStreamReader; import java.io.PrintWriter; import java.net.ServerSocket; import java.net.Socket; public class EchoServer { private static final int ECHO_SERVER_PORT = 6789; public static void main(String[] args) { ...
class Document { private final List<String> lines; Document(List<String> lines) { this.lines = lines; } List<String> getLines() { return this.lines; } static Document fromFile(File file) throws IOException { List<String> lines = new LinkedList<>(); try(BufferedReader reader = new Buffe...