java基本的文件读写
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package io;
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import java.io.*;
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/**
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* @author
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* @version 1.0
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*/
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public class ReadLineFromFile
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{
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/**
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* Attributes
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*/
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private BufferedReader br;
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private String filePath;
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/**
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* Constructor
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*/
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public ReadLineFromFile()
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{
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}
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/**
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* Constructor
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*/
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public ReadLineFromFile(String filePath)
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{
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this.filePath = filePath;
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}
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/**
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* Method that will set the file path
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*
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* @param filePath
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*/
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public void setFilePath(String filePath)
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{
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this.filePath = filePath;
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}
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/**
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* Method that will return the file path
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*
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* @return string, string that indicates file path
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*/
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public String getFilePath()
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{
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return this.filePath;
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}
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/**
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* Method that will open the file
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*/
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public void open() throws Exception
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{
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FileReader fr = new FileReader(this.filePath);
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br = new BufferedReader(fr);
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}
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/**
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* Method that will open the file with the file path specified
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*
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* @param filePath
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*/
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public void open(String filePath) throws Exception
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{
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FileReader fr = new FileReader(filePath);
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br = new BufferedReader(fr);
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}
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/**
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* Method that will read one line and return the string
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*
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* @return String, line read
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*/
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public String readLine() throws Exception
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{
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return br.readLine();
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}
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/**
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* Method that will read one byte from the file
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*
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* @return int, byte read
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*/
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public int read() throws Exception
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{
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return br.read();
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}
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/**
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* Method that will close the file
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*/
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public void close() throws Exception
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{
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br.close();
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}
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}
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1
package io;
2![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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import java.io.*;
4![](https://www.cnblogs.com/Images/OutliningIndicators/None.gif)
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/**
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*
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* @version 1.0
8
*/
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public class WriteLineToFile
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{
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/**
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* Attributes
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*/
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private PrintWriter pw;
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private String filePath;
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/**
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* Constructor
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*/
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public WriteLineToFile()
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{
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}
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/**
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* Constructor
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*/
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public WriteLineToFile(String filePath)
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{
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this.filePath = filePath;
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}
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/**
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* Method that will set the file path
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*
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* @param filePath
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*/
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public void setFilePath(String filePath)
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{
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this.filePath = filePath;
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}
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/**
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* Method that will return the file path
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*
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* @return string
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*/
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public String getFilePath()
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{
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return this.filePath;
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}
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/**
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* Method that will open the file
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*/
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public void open() throws Exception
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{
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FileWriter fw = new FileWriter(this.filePath);
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pw = new PrintWriter(fw);
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}
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/**
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* Method that will open the file and specified if the information should be
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* append to the end of the file or not
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*
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* @param append
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*/
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public void open(boolean append) throws Exception
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{
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FileWriter fw = new FileWriter(this.filePath, append);
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pw = new PrintWriter(fw);
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}
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73
/**
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* Method that will open the file
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*
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* @param filePath
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*/
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public void open(String filePath) throws Exception
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{
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FileWriter fw = new FileWriter(filePath);
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pw = new PrintWriter(fw);
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}
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/**
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* Method that will open the file with the file path specified and if it
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* should be append to the end of the file or not
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*
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* @param filePath
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* @param append
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*/
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public void open(String filePath, boolean append) throws Exception
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{
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FileWriter fw = new FileWriter(filePath, append);
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pw = new PrintWriter(fw);
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}
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/**
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* Method that will write a line to the file
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*
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* @param input
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*/
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public void writeLine(String input)
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{
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pw.println(input);
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}
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/**
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* Method that will write a string to the file
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*
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* @param input
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*/
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public void write(String input)
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{
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pw.print(input);
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}
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/**
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* Method that will close the file
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*/
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public void close()
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{
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pw.close();
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}
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}
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