Throwing ParameterException if bad parameters passed

3 files changed, 16 insertions, 2 deletions

diff --git a/src/main/java/com/beust/jcommander/ParameterException.java b/src/main/java/com/beust/jcommander/ParameterException.java
index 5004cd0..81353bf 100644
--- a/src/main/java/com/beust/jcommander/ParameterException.java
+++ b/src/main/java/com/beust/jcommander/ParameterException.java
@@ -2,6 +2,10 @@ package com.beust.jcommander;
 
 public class ParameterException extends RuntimeException {
 
+  public ParameterException(Throwable t) {
+    super(t);
+  }
+
   public ParameterException(String string) {
     super(string);
   }
diff --git a/src/main/java/com/beust/jcommander/converters/IntegerConverter.java b/src/main/java/com/beust/jcommander/converters/IntegerConverter.java
index 2efe058..77c52c2 100644
--- a/src/main/java/com/beust/jcommander/converters/IntegerConverter.java
+++ b/src/main/java/com/beust/jcommander/converters/IntegerConverter.java
@@ -1,12 +1,17 @@
 package com.beust.jcommander.converters;
 
 import com.beust.jcommander.IStringConverter;
+import com.beust.jcommander.ParameterException;
 
 public class IntegerConverter implements IStringConverter<Integer> {
 
   @Override
   public Integer convert(String value) {
-    return Integer.parseInt(value);
+    try {
+      return Integer.parseInt(value);
+    } catch(NumberFormatException ex) {
+      throw new ParameterException(ex);
+    }
   }
 
 }
diff --git a/src/main/java/com/beust/jcommander/converters/LongConverter.java b/src/main/java/com/beust/jcommander/converters/LongConverter.java
index d14fd23..cc3e9b7 100644
--- a/src/main/java/com/beust/jcommander/converters/LongConverter.java
+++ b/src/main/java/com/beust/jcommander/converters/LongConverter.java
@@ -1,12 +1,17 @@
 package com.beust.jcommander.converters;
 
 import com.beust.jcommander.IStringConverter;
+import com.beust.jcommander.ParameterException;
 
 public class LongConverter implements IStringConverter<Long> {
 
   @Override
   public Long convert(String value) {
-    return Long.parseLong(value);
+    try {
+      return Long.parseLong(value);
+    } catch(NumberFormatException ex) {
+      throw new ParameterException(ex);
+    }
   }
 
 }