feat: add Java environment check script without psutil dependency

- Check for Java processes using ps commands
- Verify Java installation
- Check psutil availability
- Provide installation instructions if missing

This helps diagnose memory monitoring issues on systems where
psutil is not yet installed.

🤖 Generated with [Claude Code](https://claude.ai/code)

Co-Authored-By: Claude <noreply@anthropic.com>

Author: jplfaria

scripts/check_java_env.py

@@ -0,0 +1,92 @@
+#!/usr/bin/env python3
+"""Quick environment check for Java processes without psutil dependency."""
+
+import subprocess
+import os
+import sys
+
+def check_java_processes():
+    """Check for Java processes using ps command."""
+    print("CDM Ontologies Java Process Environment Check")
+    print("=" * 60)
+    
+    # Check current user
+    print(f"Current user: {os.environ.get('USER', 'unknown')}")
+    print(f"Python version: {sys.version}")
+    print(f"Platform: {sys.platform}")
+    
+    # Check if we're in Docker
+    if os.path.exists('/.dockerenv'):
+        print("Running in Docker container: YES")
+    else:
+        print("Running in Docker container: NO")
+    
+    print("\n" + "-" * 60)
+    print("Checking for Java processes using 'ps'...")
+    print("-" * 60)
+    
+    try:
+        # Try different ps commands
+        commands = [
+            ("ps aux | grep -i java | grep -v grep", "Standard ps aux"),
+            ("ps -ef | grep -i java | grep -v grep", "System V style ps"),
+            ("pgrep -la java", "pgrep for java processes"),
+        ]
+        
+        found_any = False
+        for cmd, desc in commands:
+            print(f"\n{desc} ({cmd}):")
+            try:
+                result = subprocess.run(cmd, shell=True, capture_output=True, text=True)
+                if result.stdout.strip():
+                    print(result.stdout)
+                    found_any = True
+                else:
+                    print("  No Java processes found with this command")
+            except Exception as e:
+                print(f"  Error: {e}")
+        
+        if not found_any:
+            print("\n⚠️  No Java processes found. This is normal if no Java tools are running.")
+            print("\nTo test with a Java process, you could:")
+            print("1. Start the CDM pipeline in another terminal")
+            print("2. Or run a simple Java command like: java -version")
+        
+    except Exception as e:
+        print(f"Error checking processes: {e}")
+    
+    # Check Java installation
+    print("\n" + "-" * 60)
+    print("Checking Java installation...")
+    print("-" * 60)
+    
+    try:
+        result = subprocess.run(['java', '-version'], capture_output=True, text=True)
+        print("Java is installed:")
+        print(result.stderr if result.stderr else result.stdout)
+    except FileNotFoundError:
+        print("❌ Java not found in PATH")
+    
+    # Check for psutil
+    print("\n" + "-" * 60)
+    print("Checking Python package requirements...")
+    print("-" * 60)
+    
+    try:
+        import psutil
+        print("✅ psutil is installed (version: {})".format(psutil.__version__))
+    except ImportError:
+        print("❌ psutil is NOT installed")
+        print("\nTo install psutil, run one of:")
+        print("  pip install psutil")
+        print("  pip3 install psutil")
+        print("  python -m pip install psutil")
+        print("  conda install psutil  (if using conda)")
+        
+        # Check if we're in a virtual environment
+        if hasattr(sys, 'real_prefix') or (hasattr(sys, 'base_prefix') and sys.base_prefix != sys.prefix):
+            print("\n⚠️  You appear to be in a virtual environment.")
+            print("Make sure to install psutil in this environment.")
+
+if __name__ == "__main__":
+    check_java_processes()