package cn.niit.demo10;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException;
/*
字元流複製文字檔案
字元陣列 緩衝 */
public class Copy1 {
    public static void main(String[] args) {
        FileReader fr = null;
FileWriter fw = null;
        try {
            fr = new FileReader("c:\\1.txt"
 
);
fw = new FileWriter("d:\\1.txt");
//定義字元陣列
char[] chars = new char[1024];
            int len = 0;
            while ((fr.read(chars)) != -1) {
                fw.write(chars, 0, len);
fw.flush();
}
        } catch (IOException e) {
            System.out.println(e);
            throw new RuntimeException("
 
檔案複製失敗!");
} finally {
            try {
                if (fw != null) {
                    fw.close();
}
            } catch (IOException e) {
                throw new RuntimeException("釋放資源失敗");
} finally {
                try {
                    if (fr != null) {
                        fr.close();
 
}
                } catch (IOException e) {
                    throw new RuntimeException("釋放資源失敗");
}
            }
        }
    }
}