將兩個檔案合併到第三個檔案中的 Java 程式
以下是將兩個檔案合併到第三個檔案中的 Java 程式 −
示例
import java.io.*;
public class Demo {
public static void main(String[] args) throws IOException {
PrintWriter my_pw = new PrintWriter("path to third .txt file");
BufferedReader my_br = new BufferedReader(new FileReader("path to first .txt file"));
String my_line = my_br.readLine();
while (my_line != null) {
my_pw.println(my_line);
my_line = my_br.readLine();
}
my_br = new BufferedReader(new FileReader("path to second .txt file"));
my_line = my_br.readLine();
while(my_line != null) {
my_pw.println(my_line);
my_line = my_br.readLine();
}
my_pw.flush();
my_br.close();
my_pw.close();
System.out.println("The first two files have been merged into the third file successfully.");
}
}輸出
The first two files have been merged into the third file successfully.
一個名為 Demo 的類包含主函式。在這裡生成了 PrintWriter 類和 BufferedReader 的一個例項。依次讀取兩個檔案中每一行內容,直到到達 null。然後將內容新增到第三個檔案,並重新整理和關閉類例項。
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