Write and then read files from /tmp directory in aws lambda using java

Question

I have written AWS Lambda code where I need to store an image in /tmp location of aws lambda. Below is my code:

String fileLocation = "loc1/loc2/";
String imageNameWithoutExt = "image1";
//creating directories first below storing the image
boolean status = new File("/tmp/"+fileLocation).mkdirs();
if(status == true){
File targetFile = File.createTempFile(imageNameWithoutExt,".jpg",new File("/tmp/"+fileLocation));
    FileOutputStream outStream = new FileOutputStream(targetFile);
    outStream.write(buffer);
    outStream.close();
}else{
    System.out.println("unable to create directory inside /tmp/");
}

And in response, it is printing the else statement:

unable to create directory inside /tmp/

What modification I need to make to write and read the files from /tmp location. Any help would be appreciated.

Answer 1

In this line of code, you are not setting the filename:

//write file in /tmp folder of aws Lambda
File targetFile = new File("/tmp/");

I think maybe you aren't showing all your code, because I don't see where the String image1.jpg in the error message would be coming from, but that filename needs to be added to the parameter you are passing the File constructor.