看下面的示例吧:
import java.io.*;public class test{
public static void main(String[] args)
throws Exception {
DataOutputStream out =
new DataOutputStream(
new BufferedOutputStream(
new FileOutputStream("Data.txt")));
out.writeDouble(3.14159);
out.writeBytes("That was the value of pi\n");
out.writeBytes("This is pi/2:\n");
out.writeDouble(3.14159/2);
out.close();
}
} ///:~
import java.io.*;public class test{
public static void main(String[] args)
throws Exception {
DataOutputStream out =
new DataOutputStream(
new BufferedOutputStream(
new FileOutputStream("Data.txt")));
out.writeDouble(3.14159);
out.writeBytes("That was the value of pi\n");
out.writeBytes("This is pi/2:\n");
out.writeDouble(3.14159/2);
out.close();
}
} ///:~
import java.io.*;
public class Test {
public static void main(String[] args) {
try {
String a = "this is a test";
File file = new File("test.txt");
BufferedWriter writer = new BufferedWriter(new FileWriter(file));
writer.write(a);
writer.close();
BufferedReader reader = new BufferedReader(new FileReader(file));
String b = reader.readLine();
System.out.println(b);
reader.close();
}
catch(Exception e) {
System.out.println(e);
}
}
} //
fw.write(str);
FileWriter input = new FileWriter(file);
input.write("I LOVE YOU!");
input.flush();
input.close();
PrintWriter out=new PrintWriter(fout);
out.println("ASDAJJG");