74.Java异常处理机制

package testDate;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
public class TestReadFile {
    public static void main(String[] args) {
        FileReader reader = null;
        try{
            reader=new FileReader("d:/a.txt");
            char c1=(char)reader.read();
            char c2=(char)reader.read();
            System.out.println(""+c1+c2);
        }catch(FileNotFoundException e){
            e.printStackTrace();
        }catch(IOException e){
            e.printStackTrace();
        }finally{
            try {
                if(reader!=null){
                    reader.close();
                }
            } catch (IOException e) {
                e.printStackTrace();
            }
        }
    }
}