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：
/*
author by w3cschool.cc
main.java
*/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);
}
in.close();
}}
以上代码运行输出结果为：
string to be copied
以上就是java 实例 - 将文件内容复制到另一个文件的内容。