FileWriter和FileReader使用
package com.main.test; import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.FileWriter;
import java.io.IOException; public class FileWriterTest {
static FileWriter fw;
static FileReader fr;
public static void main(String[] args) throws IOException {
// TODO Auto-generated method stub
// fileWriter();
//FileReaderDemo();
//whileFileReader();
//whileFileReader2();
// shuZuReadDemo();
}
private static void shuZuReadDemo() throws FileNotFoundException,
IOException {
fr = new FileReader("c:\\田藩.txt");
char[] ch = new char[3];
fr.read(ch);
for(int i= 0 ;i<ch.length;i++){
System.out.println(ch[i]+"");
}
}
private static void whileFileReader2() throws FileNotFoundException,
IOException {
fr = new FileReader("c:\\田藩.txt");
int ch =0;
while((ch=fr.read())!=-1){
System.out.println((char)ch);
}
}
private static void whileFileReader() throws FileNotFoundException,
IOException {
fr = new FileReader("c:\\田藩.txt");
while(true){
int ch = fr.read();
if(ch == -1){
break;
}
System.out.println((char)ch);
}
fr.close();
}
private static void FileReaderDemo() throws FileNotFoundException,
IOException {
fr = new FileReader("c:\\田藩.txt");
int ch =fr.read();
int ch2 =fr.read();
System.out.println((char)ch);
System.out.println((char)ch2);
}
private static void fileWriter() throws IOException {
try {
fw = new FileWriter("c:\\田藩.txt",true);
fw.write("#eoeoeo"); } catch (IOException e) {
// TODO Auto-generated catch block
e.printStackTrace();
}finally{
fw.close();
}
} }