Fixing the java.lang.OutOfMemoryError

I am trying to attach a large file (90+ meg) as an email attachment with javamail. Is there any way to make this more efficient?

Hi, I suggest you use some monitoring tools like VisualVM or something like that to find out what object is actually consuming all the memory.

Here are some approaches to avoid OOM problems in Java applications, especially when reading from files, reading from databases, and writing to files.

This error happens when your Java program tries to use more memory than what's available in the heap.

By “memory-mapped” file, our application can use memory outside of JVM memory. This means we can refer to (2). Because (2) is inside memory, ...

A java.lang.OutOfMemoryError means that something is wrong in the application – to be precise there was an issue with a part of application memory.

I'm new to Java and working on reading very large files, need some help to understand the problem and solve it. We have got some legacy code which have to be ...

you'll need to start java with a bigger heap. Try -Xmx1024m as a parameter on the java command. Basically your going to need more memory than ...

The standard way of reading the lines of the file is in memory – both Guava and Apache Commons IO provide a quick way to do just that:

This guide equips you with memory-friendly techniques for file reading in Java. Learn how to process data in chunks and more!