36 lines
1.1 KiB
Java
36 lines
1.1 KiB
Java
// iostreams/StoringAndRecoveringData.java
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// (c)2016 MindView LLC: see Copyright.txt
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// We make no guarantees that this code is fit for any purpose.
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// Visit http://mindviewinc.com/Books/OnJava/ for more book information.
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import java.io.*;
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public class StoringAndRecoveringData {
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public static void main(String[] args)
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throws IOException {
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try(DataOutputStream out = new DataOutputStream(
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new BufferedOutputStream(
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new FileOutputStream("Data.txt")))) {
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out.writeDouble(3.14159);
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out.writeUTF("That was pi");
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out.writeDouble(1.41413);
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out.writeUTF("Square root of 2");
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}
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try(DataInputStream in = new DataInputStream(
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new BufferedInputStream(
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new FileInputStream("Data.txt")))) {
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System.out.println(in.readDouble());
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// Only readUTF() will recover the
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// Java-UTF String properly:
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System.out.println(in.readUTF());
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System.out.println(in.readDouble());
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System.out.println(in.readUTF());
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}
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}
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}
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/* Output:
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3.14159
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That was pi
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1.41413
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Square root of 2
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*/
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