32 lines
915 B
Java
32 lines
915 B
Java
//: io/StoringAndRecoveringData.java
|
|
// ©2015 MindView LLC: see Copyright.txt
|
|
import java.io.*;
|
|
|
|
public class StoringAndRecoveringData {
|
|
public static void main(String[] args)
|
|
throws IOException {
|
|
try (DataOutputStream out = new DataOutputStream(
|
|
new BufferedOutputStream(
|
|
new FileOutputStream("Data.txt")))) {
|
|
out.writeDouble(3.14159);
|
|
out.writeUTF("That was pi");
|
|
out.writeDouble(1.41413);
|
|
out.writeUTF("Square root of 2");
|
|
}
|
|
DataInputStream in = new DataInputStream(
|
|
new BufferedInputStream(
|
|
new FileInputStream("Data.txt")));
|
|
System.out.println(in.readDouble());
|
|
// Only readUTF() will recover the
|
|
// Java-UTF String properly:
|
|
System.out.println(in.readUTF());
|
|
System.out.println(in.readDouble());
|
|
System.out.println(in.readUTF());
|
|
}
|
|
} /* Output:
|
|
3.14159
|
|
That was pi
|
|
1.41413
|
|
Square root of 2
|
|
*///:~
|