通過FileReader和FileWriter實現複製檔案的方法。
阿新 • • 發佈：2018-11-11
public class CopyDemo {
public static void main(String []args)
{
copyd();
}
public static void copyd() {
FileWriter fw = null;
FileReader fd = null;
try
{
fw = new FileWriter("/Users/dongbo/Downloads/a_copy.txt");
fd = new FileReader("/Users/dongbo/Downloads/a.txt");
char [] ch = new char[1024];
int num = 0;
while((num=fd.read(ch))!=-1)
{
fw.write(ch,0,num);
}
}
catch(IOException e)
{
System.out.println( e.toString());
}
finally
{
try {
if(fw!=null)
fw.close();
}
catch (IOException e)
{
e.printStackTrace();
}
try
{
if(fd!=null)
fd.close();
}
catch(IOException e)
{
e.printStackTrace();
}
}
}
}