讀取：
Example1：一般讀檔
用到FileReader和BufferedReader
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| FileReader fileReader = new FileReader("檔案路徑");BufferedReader bufferedReader = new BufferedReader(fileReader); |
檔案讀取：（按行）
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| bufferedReader.readLine(); |
關閉檔案：
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| fileReader.close(); |
範例程式：
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| package p3;import java.io.BufferedReader;import java.io.FileReader;public class FileReadDemo { public static void main(String args[]){ FileReader fileReader; try { fileReader = new FileReader("檔案路徑"); BufferedReader bufferedReader = new BufferedReader(fileReader); while (bufferedReader.ready()){ System.out.println(bufferedReader.readLine()); } fileReader.close(); } catch (Exception e) { System.out.println(e); } }} |
Example2：按照編碼讀檔
用到FIle, FileInputStream, InputStreamReader, BufferedReader
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| File file = new File("檔案路徑");FileInputStream fis = new FileInputStream(file);InputStreamReader isr = new InputStreamReader(fis,"編碼");BufferedReader bufferedReader = new BufferedReader(isr); |
範例程式：
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| package p3;import java.io.BufferedReader;import java.io.File;import java.io.FileInputStream;import java.io.InputStreamReader;public class FileReadDemo { public static void main(String args[]){ try { File file = new File("/Users/apple/Desktop/info.txt"); FileInputStream fis = new FileInputStream(file); InputStreamReader isr = new InputStreamReader(fis,"utf8"); BufferedReader bufferedReader = new BufferedReader(isr); while (bufferedReader.ready()){ System.out.println(bufferedReader.readLine()); } } catch (Exception e) { System.out.println(e); } }} |
寫入：
Example：
用到FileWriter
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| FileWriter fileWriter = new FileWriter("檔案路徑"); |
範例程式：
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| package p3;import java.io.FileWriter;public class FileWriteDemo { public static void main(String args[]){ FileWriter fileWriter; try { fileWriter = new FileWriter("檔案路徑"); fileWriter.write("輸出內容"); fileWriter.flush(); fileWriter.close(); } catch (Exception e) { System.out.print(e); } }} |
