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();
             }
         }
     }
 }