标签：
1 字符输入(FileReader , char)
import java.io.IOException;
import java.io.FileReader;
public class ep10_1 {
public static void main(String[] args) throws IOException{
//引用对象b
FileReader b = new FileReader("/tmp/ep10_1.txt");
//定义文本存储的reader空间
char[] a = new char[1000];
//将对象b的内容读入a中,返回字符数
int num = b.read(a);
//将字符a转换成str输出
String str = new String(a,0,num);
System.out.println("文件读取内容为:\n"+str);
b.close();
}
}
2 字符输出(FileWrite char)
import java.io.FileWriter;
import java.io.IOException;
public class ep10_3 {
public static void main(String[] args) {
try{
FileWriter a = new FileWriter("/tmp/wt.txt");
for (int i=32;i<126;i++){
//char类型写入
a.write(i);
}
a.close();
}catch (IOException e){}
}
}
3 字符输入输出(BufferedReader,BufferedWriter,char)
import java.io.*;
import java.nio.Buffer;
public class ep10_4 {
public static void main(String[] args) {
String str = new String();
try{
//BufferedReader引用的类型为String,也就是说BufferedReader会把FileReader字符型的文本转换为String
BufferedReader in = new BufferedReader(new FileReader("/tmp/ep10_1.txt"));
BufferedWriter out = new BufferedWriter(new FileWriter("/tmp/ep10_4.txt"));
while ((str=in.readLine())!=null) {
System.out.println(str);
out.write(str);
out.newLine();
}
out.flush();
in.close();
out.close();
}catch (IOException e){
System.out.println("error contents:"+e);
}
}
}
4 字节的输入
import java.io.FileInputStream; import java.io.IOException; import java.io.InputStream; public class ep10_5 { public static void main(String[] args) { try { byte[] bt = new byte[1000]; FileInputStream ins = new FileInputStream("/tmp/ep10_1.txt"); int num = ins.read(bt); String str = new String(bt,0,num); System.out.println("contents:\n"+str); }catch (IOException e){ System.out.println("error:\n"+e); } } }
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原文地址：http://www.cnblogs.com/alexkn/p/4649651.html
