InputStream和InputstreamReader的转换

package com.why;

import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class Test {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		File file = new File("D:\\A.txt");
		FileInputStream input;
		try {
			input = new FileInputStream(file);
			InputStreamReader reader = new InputStreamReader(input);
			int b;
			String s = "";
			List<String> list = new ArrayList<String>();
			while((b=reader.read())!=-1){
				if(b==10 || b==13){
					list.add(s);
					s="";
				}
				else{
					char c = (char) b;
					s+=String.valueOf(c);
				}
			}
			for(int j=0;j<list.size();j++){
				System.out.println((String)list.get(j));
			}
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}

package com.why;

import java.io.BufferedReader;
import java.io.File;
import java.io.FileInputStream;
import java.io.FileNotFoundException;
import java.io.IOException;
import java.io.InputStreamReader;
import java.util.ArrayList;
import java.util.List;

public class Test {

	/**
	 * @param args
	 */
	public static void main(String[] args) {
		File file = new File("D:\\A.txt");
		FileInputStream input;
		try {
			input = new FileInputStream(file);
			InputStreamReader reader = new InputStreamReader(input);
			BufferedReader breader=new BufferedReader(reader);
			String s = breader.readLine();
			while(s!=null){
				System.out.println(s);
				s = breader.readLine();
			}
		} catch (FileNotFoundException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		} catch (IOException e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}
	}

}