Quick Answer

Diagnose and fix memory exhaustion errors.

Understanding the Issue

This Error (not Exception) occurs when JVM cannot allocate more memory. Common causes include memory leaks, insufficient heap space, or loading oversized data.

The Problem

This code demonstrates the issue:

Java Error 
// Causes memory leak
List<String> list = new ArrayList<>();
while(true) {
    list.add("OutOfMemory soon");
}

The Solution

Here's the corrected code:

Java Fixed 
// Solution 1: Increase heap size
// java -Xmx1024m MainClass

// Solution 2: Fix memory leaks
try {
    // process data
} finally {
    resource.close(); // Always release resources
}

// Solution 3: Use memory-efficient collections
List<String> list = new LinkedList<>();

Key Takeaways

Monitor memory usage and optimize data structures.