NetBeans is Showing Error file could cause outofmemoryerror netbeans

Question

Hello I am using netbeans editor for my Java Desktop application and i am getting error i mean warning like this

opening this file could cause outofmemoryerror netbeans

This warning shows up because I have a file containing code which is >1MB. And after that I am not able to see error too its not pointing so how could i fix it?

Answer 1

What is the file size of the file you're trying to open? The only time I have seen this is when the file Netbeans is going to open is relatively large (not sure what threshold Netbeans uses to show this warning).

If it's a large text file with data you're reading (or writing) with your software, open it outside of Netbeans with something like Notepad++.

Update

Okay, so it's clear now that a file that contains code is relatively large, and Netbeans is already warning you that it might be too large to be opened. I strongly recommend that you split that file into multiple files (multiple classes maybe)?

Example:

Old situation

public class Class1
{
    public void doSomething()
    {
        //do stuff (1)
        //do stuff (2)
    }
}

New situation

public class Class1
{

    private NewClass1 newClass1;
    private NewClass2 newClass2;
    private JComponent jComponent;

    public Class1()
    {
        newClass1 = new NewClass1();
        newClass2 = new NewClass2();
        //instantiating jComponent
    }

    public void doSomething()
    {
        newClass1.doSomethingSmaller(jComponent); //possibly with some return value
        newClass2.doSomethingSmallerToo(jComponent); //possibly with some return value
    }
}

public class NewClass1
{
    public void doSomethingSmaller(JComponent jComponent)
    {
        //do stuff (1)
        jComponent.doStuff();
    }
}

public class NewClass2
{
    public void doSomethingSmallerToo(JComponent jComponent)
    {
        //do stuff (2)
        jComponent.doOtherStuff();
    ]
}

Those new classes should then be in separate files, which reduces the size of your file. It also encourages reusing (parts of) your code in other places in your code.