Character Streams - 這些以 16 位 Unicode 處理數(shù)據(jù)。使用這些，您只能讀取和寫(xiě)入文本數(shù)據(jù)。

Reader 和 Writer 類(抽象)是所有字符流類的超類：用于讀取/寫(xiě)入字符流的類。以下是 Java 提供的字符數(shù)組流類

例子

以下 Java 程序使用 FileReader 從特定文件讀取數(shù)據(jù)，并使用 FileWriter 將其寫(xiě)入另一個(gè)文件。

import java.io.File;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
public class IOStreamsExample {
   public static void main(String args[]) throws IOException {
      //Creating FileReader object
      File file = new File("D:/myFile.txt");
      FileReader reader = new FileReader(file);
      char chars[] = new char[(int) file.length()];
      //Reading data from the file
      reader.read(chars);
      //Writing data to another file
      File out = new File("D:/CopyOfmyFile.txt");
      FileWriter writer = new FileWriter(out);
      //Writing data to the file
      writer.write(chars);
      writer.flush();
      System.out.println("Data successfully written in the specified file");
   }
}

輸出

Data successfully written in the specified file