importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.IOException;publicclassReadSpecificLineFromFile{publicstaticvoidmain(String[]args){StringfilePath="example.txt";inttargetLine=3;try(BufferedReaderbr=newBufferedReader(newFileReader(filePath))){Stringline=null;for(inti=1;i<targetLine;i...
2.1. Reading a File Line by Line try(BufferedReaderbufferedReader=newBufferedReader(newFileReader("/path/file"))){StringcurrLine;while((currLine=bufferedReader.readLine())!=null){System.out.println(currLine);System.out.println(System.lineSeparator());}}catch(IOExceptione){e.printStackTrace();} ...
reader=newInputStreamReader(newFileInputStream(fileName));//读入多个字符到字符数组中,charread为一次读取字符数while((charread = reader.read(tempchars)) != -1) {//同样屏蔽掉\r不显示if((charread ==tempchars.length)&& (tempchars[tempchars.length - 1] != '\r')) { System.out.print(temp...
这里我们可以使用BufferedReader来逐行读取文件内容,然后使用一个计数器来记录当前读取到的行数。 importjava.io.BufferedReader;importjava.io.FileReader;importjava.io.IOException;publicclassFileDataReader{publicstaticvoidreadDataFromLine(StringfilePath,intstartLine){try(BufferedReaderbr=newBufferedReader(newFileReade...
String currentLine = reader.readLine(); reader.close(); assertEquals(expected_value, currentLine); } Note that readLine() will return null when the end of the file is reached. 3. Read with Scanner Next, let’s use a Scanner to read from the File – the file contains: 1 Hello world ...
PathfilePath=Paths.get("c:/temp","data.txt");List<String>lines=Files.readAllLines(filePath);for(Stringline:lines){System.out.println(line);} 4. Reading a File Line by Line usingFileReader[Legacy] Till Java 7, we could read a file usingFileReaderin various ways. This has been mentioned...
message += line; } System.out.println(message); 上面是代码的节选,使用这段代码会发现写数据时每次都成功,而读数据侧却一直没有数据输出(除非把流关掉)。经过折腾,原来这里面有几个大问题需要理解: 误以为readLine()是读取到没有数据时就返回null(因为其它read方法当读到没有数据时返回-1),而实际上readLine...
Read File to String using BufferedReader [< Java 7] 使用BufferedReader 读取文件,最老的方式 If you are still not using java 7 or later, then useBufferedReaderclass. It’sreadLine()method reads the file one line at a time and return the content. ...
我看到:从‘fs’导入{ readFile }; 但是我尝试了上面和其他import的变体,但是无法使它工作,所以我不得不使用有人能解释一下为什么会这样,因为readline</e 浏览0提问于2018-08-27得票数 3 回答已采纳 1回答 Groovy TCP客户端挂起 、、 s.withStreams { inStream, outStream -> def responseText = reader....
public void whenReadWithBufferedReader_thenCorrect() throws IOException { String expected_value = "Hello, world!"; String file ="src/test/resources/fileTest.txt"; BufferedReader reader = new BufferedReader(new FileReader(file)); String currentLine = reader.readLine(); ...