[Java] Remove redundant throws.

Author: mjpt777

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/TargetCodeGenerator.java

@@ -17,8 +17,6 @@
 
 import uk.co.real_logic.sbe.ir.Ir;
 
-import java.io.IOException;
-
 /**
  * Target a code generator for a given language.
  */
@@ -30,7 +28,6 @@ public interface TargetCodeGenerator
      * @param ir        describing the message schemas from which code should generated.
      * @param outputDir to which the generated code with be written.
      * @return a new instance of a {@link CodeGenerator} for the given target language.
-     * @throws IOException if an error occurs when dealing with the output directory.
      */
-    CodeGenerator newInstance(Ir ir, String outputDir) throws IOException;
+    CodeGenerator newInstance(Ir ir, String outputDir);
 }

sbe-tool/src/main/java/uk/co/real_logic/sbe/generation/TargetCodeGeneratorLoader.java

@@ -23,15 +23,13 @@
 import uk.co.real_logic.sbe.generation.java.JavaGenerator;
 import uk.co.real_logic.sbe.ir.Ir;
 
-import java.io.IOException;
-
 import static uk.co.real_logic.sbe.SbeTool.*;
 
 public enum TargetCodeGeneratorLoader implements TargetCodeGenerator
 {
     JAVA()
     {
-        public CodeGenerator newInstance(final Ir ir, final String outputDir) throws IOException
+        public CodeGenerator newInstance(final Ir ir, final String outputDir)
         {
             return new JavaGenerator(
                 ir,
@@ -46,15 +44,15 @@ public CodeGenerator newInstance(final Ir ir, final String outputDir) throws IOE
 
     CPP()
     {
-        public CodeGenerator newInstance(final Ir ir, final String outputDir) throws IOException
+        public CodeGenerator newInstance(final Ir ir, final String outputDir)
         {
             return new CppGenerator(ir, new NamespaceOutputManager(outputDir, ir.applicableNamespace()));
         }
     },
 
     GOLANG()
     {
-        public CodeGenerator newInstance(final Ir ir, final String outputDir) throws IOException
+        public CodeGenerator newInstance(final Ir ir, final String outputDir)
         {
             return new GolangGenerator(ir, new GolangOutputManager(outputDir, ir.applicableNamespace()));
         }
@@ -82,9 +80,7 @@ public static TargetCodeGenerator get(final String name)
         }
         catch (final Exception ex)
         {
-            // do nothing and fall through
+            throw new IllegalArgumentException("No code generator for name: " + name, ex);
         }
-
-        throw new IllegalArgumentException("No code generator for name: " + name);
     }
 }