diff --git a/jdtls-bin-override/jdtls.py b/jdtls-bin-override/jdtls.py
index cd4c5a0..d7cc1fa 100755
--- a/jdtls-bin-override/jdtls.py
+++ b/jdtls-bin-override/jdtls.py
@@ -18,6 +18,7 @@
 import subprocess
 from pathlib import Path
 import tempfile
+from urllib.parse import urlparse
 
 def get_java_executable(known_args):
 	if known_args.java_executable is not None:
@@ -69,6 +70,54 @@ def get_shared_config_path(jdtls_base_path):
 
 	return jdtls_base_path / config_dir
 
+def get_proxy_jvm_args():
+	jvm_args = []
+
+	# HTTP Proxy
+	http_proxy = os.environ.get('HTTP_PROXY') or os.environ.get('http_proxy')
+	if http_proxy:
+		# Add default scheme if missing
+		if '://' not in http_proxy:
+			http_proxy = 'http://' + http_proxy
+		parsed = urlparse(http_proxy)
+		if parsed.hostname:
+			jvm_args.append(f'-Dhttp.proxyHost={parsed.hostname}')
+			if parsed.port:
+				jvm_args.append(f'-Dhttp.proxyPort={parsed.port}')
+			elif parsed.scheme == 'http':
+				jvm_args.append('-Dhttp.proxyPort=80')
+			if parsed.username:
+				jvm_args.append(f'-Dhttp.proxyUser={parsed.username}')
+			if parsed.password:
+				jvm_args.append(f'-Dhttp.proxyPassword={parsed.password}')
+
+	# HTTPS Proxy
+	https_proxy = os.environ.get('HTTPS_PROXY') or os.environ.get('https_proxy')
+	if https_proxy:
+		# Add default scheme if missing
+		if '://' not in https_proxy:
+			https_proxy = 'https://' + https_proxy
+		parsed = urlparse(https_proxy)
+		if parsed.hostname:
+			jvm_args.append(f'-Dhttps.proxyHost={parsed.hostname}')
+			if parsed.port:
+				jvm_args.append(f'-Dhttps.proxyPort={parsed.port}')
+			elif parsed.scheme == 'https':
+				jvm_args.append('-Dhttps.proxyPort=443')
+			if parsed.username:
+				jvm_args.append(f'-Dhttps.proxyUser={parsed.username}')
+			if parsed.password:
+				jvm_args.append(f'-Dhttps.proxyPassword={parsed.password}')
+
+	# NO_PROXY / Non-proxy hosts
+	no_proxy = os.environ.get('NO_PROXY') or os.environ.get('no_proxy')
+	if no_proxy:
+		# Convert comma-separated list to pipe-separated for Java
+		no_proxy_hosts = no_proxy.replace(',', '|')
+		jvm_args.append(f'-Dhttp.nonProxyHosts={no_proxy_hosts}')
+
+	return jvm_args
+
 def main(args):
 	cwd_name = os.path.basename(os.getcwd())
 	jdtls_data_path = os.path.join(tempfile.gettempdir(), "jdtls-" + sha1(cwd_name.encode()).hexdigest())
@@ -103,6 +152,7 @@ def main(args):
 			"--add-modules=ALL-SYSTEM",
 			"--add-opens", "java.base/java.util=ALL-UNNAMED",
 			"--add-opens", "java.base/java.lang=ALL-UNNAMED"] \
+			+ get_proxy_jvm_args() \
 			+ known_args.jvm_arg \
 			+ ["-jar", jar_path,
 			"-data", known_args.data] \
diff --git a/jdtls-bin-override/test_jdtls.py b/jdtls-bin-override/test_jdtls.py
new file mode 100644
index 0000000..dd4fa21
--- /dev/null
+++ b/jdtls-bin-override/test_jdtls.py
@@ -0,0 +1,180 @@
+import os
+import pytest
+from unittest.mock import patch
+from jdtls import get_proxy_jvm_args
+
+
+class TestGetProxyJvmArgs:
+    """Test suite for get_proxy_jvm_args function."""
+
+    def test_no_proxy_variables(self):
+        """Test with no proxy environment variables set."""
+        with patch.dict(os.environ, {}, clear=True):
+            result = get_proxy_jvm_args()
+            assert result == []
+
+    def test_http_proxy_with_hostname_only(self):
+        """Test HTTP_PROXY with just hostname."""
+        with patch.dict(os.environ, {'HTTP_PROXY': 'http://proxy.example.com'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.proxyHost=proxy.example.com' in result
+            assert '-Dhttp.proxyPort=80' in result
+
+    def test_http_proxy_with_port(self):
+        """Test HTTP_PROXY with hostname and port."""
+        with patch.dict(os.environ, {'HTTP_PROXY': 'http://proxy.example.com:8080'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.proxyHost=proxy.example.com' in result
+            assert '-Dhttp.proxyPort=8080' in result
+
+    def test_http_proxy_lowercase(self):
+        """Test http_proxy (lowercase) environment variable."""
+        with patch.dict(os.environ, {'http_proxy': 'http://proxy.example.com:3128'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.proxyHost=proxy.example.com' in result
+            assert '-Dhttp.proxyPort=3128' in result
+
+    def test_http_proxy_with_credentials(self):
+        """Test HTTP_PROXY with username and password."""
+        with patch.dict(os.environ, {'HTTP_PROXY': 'http://user:pass@proxy.example.com:8080'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.proxyHost=proxy.example.com' in result
+            assert '-Dhttp.proxyPort=8080' in result
+            assert '-Dhttp.proxyUser=user' in result
+            assert '-Dhttp.proxyPassword=pass' in result
+
+    def test_https_proxy_with_hostname_only(self):
+        """Test HTTPS_PROXY with just hostname."""
+        with patch.dict(os.environ, {'HTTPS_PROXY': 'https://secure-proxy.example.com'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttps.proxyHost=secure-proxy.example.com' in result
+            assert '-Dhttps.proxyPort=443' in result
+
+    def test_https_proxy_with_port(self):
+        """Test HTTPS_PROXY with hostname and port."""
+        with patch.dict(os.environ, {'HTTPS_PROXY': 'https://secure-proxy.example.com:8443'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttps.proxyHost=secure-proxy.example.com' in result
+            assert '-Dhttps.proxyPort=8443' in result
+
+    def test_https_proxy_lowercase(self):
+        """Test https_proxy (lowercase) environment variable."""
+        with patch.dict(os.environ, {'https_proxy': 'https://secure-proxy.example.com:8443'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttps.proxyHost=secure-proxy.example.com' in result
+            assert '-Dhttps.proxyPort=8443' in result
+
+    def test_https_proxy_with_credentials(self):
+        """Test HTTPS_PROXY with username and password."""
+        with patch.dict(os.environ, {'HTTPS_PROXY': 'https://user:pass@secure-proxy.example.com:8443'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttps.proxyHost=secure-proxy.example.com' in result
+            assert '-Dhttps.proxyPort=8443' in result
+            assert '-Dhttps.proxyUser=user' in result
+            assert '-Dhttps.proxyPassword=pass' in result
+
+    def test_no_proxy_single_host(self):
+        """Test NO_PROXY with a single host."""
+        with patch.dict(os.environ, {'NO_PROXY': 'localhost'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.nonProxyHosts=localhost' in result
+
+    def test_no_proxy_multiple_hosts(self):
+        """Test NO_PROXY with comma-separated hosts."""
+        with patch.dict(os.environ, {'NO_PROXY': 'localhost,127.0.0.1,.example.com'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.nonProxyHosts=localhost|127.0.0.1|.example.com' in result
+
+    def test_no_proxy_lowercase(self):
+        """Test no_proxy (lowercase) environment variable."""
+        with patch.dict(os.environ, {'no_proxy': 'localhost,127.0.0.1'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.nonProxyHosts=localhost|127.0.0.1' in result
+
+    def test_all_proxies_combined(self):
+        """Test with all proxy environment variables set."""
+        env_vars = {
+            'HTTP_PROXY': 'http://user:pass@proxy.example.com:8080',
+            'HTTPS_PROXY': 'https://user:pass@secure-proxy.example.com:8443',
+            'NO_PROXY': 'localhost,127.0.0.1,.local'
+        }
+        with patch.dict(os.environ, env_vars, clear=True):
+            result = get_proxy_jvm_args()
+
+            # HTTP proxy assertions
+            assert '-Dhttp.proxyHost=proxy.example.com' in result
+            assert '-Dhttp.proxyPort=8080' in result
+            assert '-Dhttp.proxyUser=user' in result
+            assert '-Dhttp.proxyPassword=pass' in result
+
+            # HTTPS proxy assertions
+            assert '-Dhttps.proxyHost=secure-proxy.example.com' in result
+            assert '-Dhttps.proxyPort=8443' in result
+            assert '-Dhttps.proxyUser=user' in result
+            assert '-Dhttps.proxyPassword=pass' in result
+
+            # NO_PROXY assertions
+            assert '-Dhttp.nonProxyHosts=localhost|127.0.0.1|.local' in result
+
+    def test_uppercase_takes_precedence(self):
+        """Test that uppercase environment variables take precedence over lowercase."""
+        env_vars = {
+            'HTTP_PROXY': 'http://upper.example.com:8080',
+            'http_proxy': 'http://lower.example.com:3128'
+        }
+        with patch.dict(os.environ, env_vars, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.proxyHost=upper.example.com' in result
+            assert '-Dhttp.proxyPort=8080' in result
+
+    def test_proxy_without_scheme(self):
+        """Test proxy URL without scheme (should add default scheme)."""
+        with patch.dict(os.environ, {'HTTP_PROXY': 'proxy.example.com:8080'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.proxyHost=proxy.example.com' in result
+            assert '-Dhttp.proxyPort=8080' in result
+
+    def test_https_proxy_without_scheme(self):
+        """Test HTTPS proxy URL without scheme (should add default https scheme)."""
+        with patch.dict(os.environ, {'HTTPS_PROXY': 'secure-proxy.example.com:8443'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttps.proxyHost=secure-proxy.example.com' in result
+            assert '-Dhttps.proxyPort=8443' in result
+
+    def test_proxy_with_username_no_password(self):
+        """Test proxy with username but no password."""
+        with patch.dict(os.environ, {'HTTP_PROXY': 'http://user@proxy.example.com:8080'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.proxyHost=proxy.example.com' in result
+            assert '-Dhttp.proxyPort=8080' in result
+            assert '-Dhttp.proxyUser=user' in result
+            # Password should not be in result since it's None
+            assert not any('proxyPassword' in arg for arg in result)
+
+    def test_http_proxy_no_port_non_http_scheme(self):
+        """Test HTTP proxy without port and non-http scheme doesn't add default port."""
+        with patch.dict(os.environ, {'HTTP_PROXY': 'socks://proxy.example.com'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttp.proxyHost=proxy.example.com' in result
+            # Should not add default port for non-http scheme
+            assert not any('proxyPort' in arg for arg in result)
+
+    def test_https_proxy_no_port_non_https_scheme(self):
+        """Test HTTPS proxy without port and non-https scheme doesn't add default port."""
+        with patch.dict(os.environ, {'HTTPS_PROXY': 'socks://proxy.example.com'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert '-Dhttps.proxyHost=proxy.example.com' in result
+            # Should not add default port for non-https scheme
+            assert not any('proxyPort' in arg for arg in result)
+
+    def test_empty_proxy_value(self):
+        """Test with empty proxy environment variable."""
+        with patch.dict(os.environ, {'HTTP_PROXY': ''}, clear=True):
+            result = get_proxy_jvm_args()
+            assert result == []
+
+    def test_invalid_url_no_hostname(self):
+        """Test with invalid URL that has no hostname."""
+        with patch.dict(os.environ, {'HTTP_PROXY': 'http://'}, clear=True):
+            result = get_proxy_jvm_args()
+            assert result == []