如何在 Java 中編寫一個程式從一個檔案複製字元到另一個檔案中?
按字元逐個字元複製一個檔案的內容到另一個檔案中
示例
import java.io.File; import java.io.FileInputStream; import java.io.FileOutputStream; import java.io.IOException; public class CopyFiles { public static void main(String[] args) throws IOException { //Creating a File object to hold the source file File source = new File("D:\ExampleDirectory\SampleFile.txt"); //Creating a File object to hold the destination file File destination = new File("D:\ExampleDirectory\outputFile.txt"); //Creating an FileInputStream object FileInputStream inputStream = new FileInputStream(source); //Creating an FileOutputStream object FileOutputStream outputStream = new FileOutputStream(destination); //Creating a buffer to hold the data int length = (int) source.length(); byte[] buffer = new byte[length]; while ((length = inputStream.read(buffer)) > 0) { outputStream.write(buffer, 0, length); } inputStream.close(); outputStream.close(); System.out.println("File copied successfully......."); } }
輸出
File copied successfully.......
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