I am unable to create temporary file

Question

I am trying to create a temporary files using java.But when i run my codes it shows the following error.

number.java:7: cannot find symbol
symbol  : class Path
location: class number
    Path tempFile = Files.createTempFile(null, ".txt");
    ^
number.java:7: cannot find symbol
symbol  : method createTempFile(<nulltype>,java.lang.String)
location: class Files
    Path tempFile = Files.createTempFile(null, ".txt");
                         ^
2 errors

and here's the code and when i import java.io.file;.then it show error package does not exist

import java.io.*;


public class number{
public static void main(String args[])
{try {
    Path tempFile = Files.createTempFile(null, ".txt");
    System.out.format("The temporary file" +
        " has been created: %s%n", tempFile);
} catch (IOException x) {
    System.err.format("IOException: %s%n", x);
}
}}

See this: http://stackoverflow.com/questions/617414/create-a-temporary-directory-in-java — Miguel Prz, Apr 01 '13 at 07:12
in which package `Files` comes? It should have been `File` I guess. — AmitG, Apr 01 '13 at 07:14
After upgrading to SE7 the error is Desktop\Jdbc\number.java:7: error: cannot find symbol Path tempFile = Files.createTempFile(temp, ".txt"); ^ symbol: variable temp location: class number 1 error — Gaurav, Apr 01 '13 at 08:23

Ankit · Answer 1 · 2013-04-01T07:27:52.650

1

Files.createTempFile(null, ".txt"); 1st parameter cant be null, it can be any prefix (basically to identify your temp file among lots of other). pass it some non null values.

Files.createTempFile("myfile", ".txt");

Also, correct import as below

import java.nio.file.*;
import java.io.*;

edited Apr 01 '13 at 07:27

answered Apr 01 '13 at 07:11

Ankit

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what should i pass in place of null – Gaurav Apr 01 '13 at 07:12
After changing this number.java:7: cannot find symbol symbol : class Path location: class number Path tempFile = Files.createTempFile(temp, ".txt"); ^ number.java:7: cannot find symbol symbol : variable temp location: class number Path tempFile = Files.createTempFile(temp, ".txt"); ^ 2 errors – Gaurav Apr 01 '13 at 07:15
when i import java.io.file.Files error is package java.io.file does not exist – Gaurav Apr 01 '13 at 07:18
yes, bcz its under java.nio.file, not java.io.file – Ankit Apr 01 '13 at 07:21
java.io.file also exist http://www.roseindia.net/java/java-tips/io/10file/05file.shtml – Gaurav Apr 01 '13 at 07:23
@Gaurav yes, but you are mixing it up. Path & Files are in java7. Better decide what you wanna use. Under java 7 or below..... check the answer to correct the imports – Ankit Apr 01 '13 at 07:29

score 0 · Answer 2 · answered Apr 01 '13 at 07:18

0

The Path class, introduced in the Java SE 7 release, is one of the primary entrypoints of the java.nio.file package. If your application uses file I/O, you will want to learn about the powerful features of this class. See this for more info: http://docs.oracle.com/javase/tutorial/essential/io/pathClass.html

http://docs.oracle.com/javase/7/docs/api/java/nio/file/package-summary.html

answered Apr 01 '13 at 07:18

Civa

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To use path which package should i import – Gaurav Apr 01 '13 at 07:20
Package java.nio.file – Civa Apr 01 '13 at 07:20
I think same should be supported by java.io.file – Gaurav Apr 01 '13 at 07:22
it introduced in Java SE 7 release see my links you can get full info – Civa Apr 01 '13 at 07:24
but java.io.file is also supported in 5.0 – Gaurav Apr 01 '13 at 07:27
Yeah but class Path in in nio only – Civa Apr 01 '13 at 07:28
I was using SE6 now i upgrade to SE7 but same problem arise – Gaurav Apr 01 '13 at 08:17
did you import java.nio.file.*; – Civa Apr 01 '13 at 08:23
yes I import these 2 import java.io.*; import java.nio.file.*; – Gaurav Apr 01 '13 at 08:25
Check the class path set correctly in your system. – Civa Apr 01 '13 at 08:27
ya its OK problem in program is having problem in temp variable – Gaurav Apr 01 '13 at 08:30
So you can check my answer as correct right? – Civa Apr 01 '13 at 08:32
My problem is not yet solved what are the argument for createTempFile(); – Gaurav Apr 01 '13 at 08:34

I am unable to create temporary file

2 Answers2