1 files changed, 4 insertions, 4 deletions
diff --git a/luni/src/main/java/java/security/cert/CertStore.java b/luni/src/main/java/java/security/cert/CertStore.java
index 6cdaea7..2e28828 100644
--- a/luni/src/main/java/java/security/cert/CertStore.java
+++ b/luni/src/main/java/java/security/cert/CertStore.java
@@ -97,7 +97,7 @@ public class CertStore {
     public static CertStore getInstance(String type, CertStoreParameters params)
             throws InvalidAlgorithmParameterException, NoSuchAlgorithmException {
         if (type == null) {
-            throw new NullPointerException();
+            throw new NullPointerException("type == null");
         }
         try {
             Engine.SpiAndProvider sap = ENGINE.getInstance(type, params);
@@ -140,7 +140,7 @@ public class CertStore {
             throws InvalidAlgorithmParameterException,
             NoSuchAlgorithmException, NoSuchProviderException {
         if (provider == null || provider.isEmpty()) {
-            throw new IllegalArgumentException();
+            throw new IllegalArgumentException("provider == null || provider.isEmpty()");
         }
         Provider impProvider = Security.getProvider(provider);
         if (impProvider == null) {
@@ -172,10 +172,10 @@ public class CertStore {
             CertStoreParameters params, Provider provider)
             throws NoSuchAlgorithmException, InvalidAlgorithmParameterException {
         if (provider == null) {
-            throw new IllegalArgumentException();
+            throw new IllegalArgumentException("provider == null");
         }
         if (type == null) {
-            throw new NullPointerException();
+            throw new NullPointerException("type == null");
         }
         try {
             Object spi = ENGINE.getInstance(type, provider, params);