I/O学习的开始
import java.io.FileWriter;
import java.io.IOException;
public class Myio {
public static void main(String[] args) {
FileReader fr = null;
FileWriter fw = null;
try {
File srcFile = new File("D:\\test\\test.txt");//test文件中已经保存了一些文字
File destFile = new File("D:\\test1\\test1.txt");
fr = new FileReader(srcFile);
fw = new FileWriter(destFile);
char[] cbuf = new char[1];
int len;
while ((len = fr.read(cbuf)) != -1) {
fw.write(cbuf,0,len);
System.out.print(cbuf);
}
}catch (Exception e) {
e.printStackTrace();
}finally {
try {
if(fw != null)
fw.close();
}catch (IOException e) {
e.printStackTrace();
}finally {
try {
if (fr != null)
fr.close();
}catch (IOException e) {
e.printStackTrace();
}
}
}
}
}
运行结果如下: