how to write data in file in java

Package Zuoye;Import Java.io.FileInputStream;Import Java.io.FileOutputStream;public class Biniodemo {PublicStaticvoidMainString[] args) {FileInputStreamIntry {in = new fileinputstream ( "d:/ Zuoye/1.doc "); byte[]b=new byte[1024"; int i=-1; FileOutputStream out=new fileoutputstream (" d:/zuoye/001. Doc "); while ((I=in.read (b)) >0) { Span class= "Hljs-keyword" >out.write (b, 0, i);} out.close (); in.close (); catch (Exception e) {//TODO Auto-generated catch block E.printstacktrace ();}} }

and Sqoopwriting a program to put data into HDFs is better than using existing tools. Because there are now very mature tools to do this, and have covered most of the demand. Flume is a tool for Apache's massive data movement. One of the typical applications isdeploy the flume on a Web server machine,collect the logs on the Web server and import them into HDFs. It also supports various log writes. Sqoop is

, * otherwise it may appear java.io.IOException:Strea M closed Exception * * @throws ioexception * * @Test public void WriteFile02 () throws IOException {Stri Ng[] arrs={"zhangsan,23, Fujian", "lisi,30, Shanghai", "wangwu,43, Beijing", "l aolin,21, Chongqing "," ximenqing,67, Guizhou "}; Solve Chinese garbled problem when writing to FileOutputStream Fos=new FileOutputStream (New File ("E:/phsftp/evdokey/evdokey_201103221556.txt") ); Outp

(len = fis.read (buffer)) >0){Fos.write (Buffer,0,len);}}Did you find any specific reasons for this?Cause: If you upload a file using the above code, open the uploaded file to indicate that the file is being consumed by another application. But after a while, you can open it.Remember to close the input and output stream when the

exception ");E. printstacktrace ();}Return al;}} // Inserttoxml. Java Package com. Xie. xmlparse. dom4j; Import java. Io. file;Import java. Io. filewriter;Import java. Io. ioexception;Import java. util. hashset;Import

2017-10-30The interview in the previous days when the exam two questions, are related to the Java Foundation: Use Java IO package to read and write files; Use JDBC to get the data. It is a pity that I could not remember the basic knowledge, so it is necessary to tidy up and consolidate this knowledge.

One: Cause(1) Before processing text data, all kinds of cleaning data are used in Java File,filereader/filewriter,bufferedreader/bufferedwriter class, see Java Read-write text file(2)

There are several common methods for reading and writing Java files, such as InputStream/OutputStream and BufferedReader, I will introduce their usage examples in detail below. There are several common methods to read and write files: 1. byte read/write (InputStream/OutputStream) and character read (FileReader/FileWriter) FileInputStream's read (buffer) method, e

Import java. io. BufferedReader;Import java. io. File;Import java. io. FileInputStream;Import java. io. FileReader;Import java. io. IOException;Import java. io. InputStream;/*** * 1

JAVA 47th-IO stream (1): file read/write Input stream and output stream relative to memory Read data from external devices to memory: Input Write data in memory to external devices: Output I/O streams often use base classes Abstra

stream usage can avoid this problem. [Java] package io; import java. io. *; public class TestEOF {public static void main (String [] args) throws IOException {DataInputStream in = new DataInputStream (new BufferedInputStream (new FileInputStream ("C: \ Users \ zm \ workspace \ Thinking in java \ src \ io \ TestEOF. java