JavaI/O文件读写:字符输入流

字符输入流：FileReader（类似字节输入流）

package IO;

import java.io.File;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;

public class Zifushuru_FileReader {
	//字符输入流：FileReader
	public static void main(String[] args) {
		File file=new File("C:\\123.txt");
		FileReader fr=null;
		try {
			fr=new FileReader(file);
			char[] a=new char[1024];
			int len=fr.read(a);
			while(len!=-1) {
				String b=new String(a);
				System.out.println(b);
				len=fr.read();
			}
		} catch (Exception e) {
			// TODO Auto-generated catch block
			e.printStackTrace();
		}finally {
			try {
				fr.close();
			} catch (IOException e) {
				// TODO Auto-generated catch block
				e.printStackTrace();
			}
		}
	}
}