InputStream inputStream =newByteArrayInputStream(originalString.getBytes); ByteArrayOutputStream buffer =newByteArrayOutputStream; intnRead; byte[] data =newbyte[1024]; while((nRead = inputStream.read(data,0, data.length)) != -1) { buffer.write(data,0, nRead); } buffer.flush; byte[] ...
BufferedReader构造函数接受一个Reader实例(如FileReader,InputStreamReader)作为字符输入流源。 这是一个简单的示例,显示了如何使用它逐行读取文件: try { // create a reader instance BufferedReader br = new BufferedReader(new FileReader("examplefile.txt")); // read until end of file String line; while...
// java 9// 使用这种方式可以读取短文本文件varcontent=newString(Files.readAllBytes(path), charset);// java 9List<String> lines = Files.readAllLines(path, charset);// 如果文件过大,可以懒加载(处理行)try(Stream<String> lines = Files.lines(path, charset)) { . . . }// 可以使用Scanner来读...
1.3.1 InputStream 使用 继承关系图和类方法,如下图: InputStream 使用示例: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 InputStream inputStream=newFileInputStream("D:\\log.txt");byte[]bytes=newbyte[inputStream.available()];inputStream.read(bytes);String str=newString(bytes,"utf-8");Sy...
import java.util.stream.Stream; void main() throws IOException { var fileName = "src/main/resources/thermopylae.txt"; var path = Paths.get(fileName); try (Stream<String> lines = Files.lines(path)) { lines.forEachOrdered(System.out::println); ...
inputStream .filter(str -> str.length() > 5)// 过滤数据 .forEach(o -> { // pass do sample logic }); } logMemory(); stopwatch.stop(); System.out.println("read all lines spend " + stopwatch.elapsed(TimeUnit.SECONDS) + " s"); ...
调用栈在SocketInputStream或SocketImpl上,socketRead0等方法。 调用栈包含了jdbc相关的包。很可能发生了数据库死锁 "d&a-614" daemon prio=6 tid=0x0000000022f1f000 nid=0x37c8 runnable [0x0000000027cbd000] java.lang.Thread.State: RUNNABLE at java.net.SocketInputStream.socketRead0(Native Method) at ...
try (Stream<String> stream = Files.lines(Paths.get(fileName))) { stream.forEach(System.out::println); } #6楼 FileReader不允许您指定编码,如果需要指定编码,请改用InputStreamReader : try { BufferedReader br = new BufferedReader(new InputStreamReader(new FileInputStream(filePath), "Cp1252"))...
nullInputStream,readAllBytes,readNBytes,readNBytes,transferTo Methods declared in class java.lang.Object clone,equals,finalize,getClass,hashCode,notify,notifyAll,toString,wait,wait,wait Constructor Detail DataInputStream public DataInputStream(InputStreamin) ...
(一)、字节流(Byte Stream) 字节流用于处理原始二进制数据。它们是最基本的 I/O 类型,用于处理所有类型的 I/O。 1. 主要类 InputStream:所有字节输入流的超类。 OutputStream:所有字节输出流的超类。 2. 常用子类 FileInputStream:从文件中读取字节。 FileOutputStream:向文件中写入字节。 BufferedInputStream:为...