Java 实例 - 将文件内容复制到另一个文件
Java 教程
· 2019-02-10 20:41:53
以下实例演示了使用 BufferedWriter 类的 read 和 write 方法将文件内容复制到另一个文件：
Main.java 文件
import java.io.*;
public class Main {
public static void main(String[] args) throws Exception {
BufferedWriter out1 = new BufferedWriter(new FileWriter("srcfile"));
out1.write("string to be copied\n");
out1.close();
InputStream in = new FileInputStream(new File("srcfile"));
OutputStream out = new FileOutputStream
(new File("destnfile"));
byte[] buf = new byte[1024];
int len;
while ((len = in.read(buf)) > 0) {
out.write(buf, 0, len);
}
in.close();
out.close();
BufferedReader in1 = new BufferedReader(new FileReader("destnfile"));
String str;
while ((str = in1.readLine()) != null) {
System.out.println(str);
}
in1.close();
}
}
以上代码运行输出结果为：
string to be copied
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