首先我们在d盘建一个1.txt
1.写入
import java.io.FileWriter;
import java.io.IOException;
public class FireWriterDemo {
public static void main(String[] args) throws IOException {
FileWriter fw=new FileWriter("D:\\1.txt");
fw.write("helloworld!!");
fw.flush();
fw.write("lirixing");
fw.close();
}
}
2.读取
import java.io.BufferedReader;
import java.io.FileNotFoundException;
import java.io.FileReader;
import java.io.IOException;
public class ioText {
public static void main(String[] args) throws IOException {
BufferedReader bre=null;
String file="D:/1.txt";
String str=null;
bre=new BufferedReader(new FileReader(file));
while((str=bre.readLine())!=null){
System.out.println(str);
}
}
}