思路:
使用基本的IO流操作读入数据与写出数据
/*
练习 :复制文本的操作
*/
public void test3(){
File file =new File("Hello1.txt");
FileReader fileReader=null;
File file1=new File("Hel.txt");
FileWriter fileWriter=null;
int read;
char[] chars=new char[5];
try {
fileReader=new FileReader(file);
fileWriter=new FileWriter(file1,false);
while ((read=fileReader.read(chars))!=-1){
fileWriter.write(chars,0,read);
}
} catch (IOException e) {
e.printStackTrace();
}
finally {
try {
fileWriter.close();
fileReader.close();
} catch (IOException e) {
e.printStackTrace();
}
}
}
}