cleanup: don't declare exceptions that can never be thrown

git-svn-id: https://svn.apache.org/repos/asf/lucene/java/trunk@150585 13f79535-47bb-0310-9956-ffa450edef68

src/test/org/apache/lucene/index/MockIndexInput.java

@@ -18,8 +18,6 @@ package org.apache.lucene.index;
 
 import org.apache.lucene.store.BufferedIndexInput;
 
-import java.io.IOException;
-
 public class MockIndexInput extends BufferedIndexInput {
     private byte[] buffer;
     private int pointer = 0;
@@ -30,8 +28,7 @@ public class MockIndexInput extends BufferedIndexInput {
         length = bytes.length;
     }
 
-    protected void readInternal(byte[] dest, int destOffset, int len)
-            throws IOException {
+    protected void readInternal(byte[] dest, int destOffset, int len) {
         int remainder = len;
         int start = pointer;
         while (remainder != 0) {
@@ -47,11 +44,11 @@ public class MockIndexInput extends BufferedIndexInput {
         pointer += len;
     }
 
-    public void close() throws IOException {
+    public void close() {
         // ignore
     }
 
-    protected void seekInternal(long pos) throws IOException {
+    protected void seekInternal(long pos) {
         pointer = (int) pos;
     }
 

src/test/org/apache/lucene/index/TestFilterIndexReader.java

@@ -34,8 +34,7 @@ public class TestFilterIndexReader extends TestCase {
 
      /** Filter that only permits terms containing 'e'.*/
     private static class TestTermEnum extends FilterTermEnum {
-      public TestTermEnum(TermEnum termEnum)
-        throws IOException {
+      public TestTermEnum(TermEnum termEnum) {
         super(termEnum);
       }
 
@@ -51,8 +50,7 @@ public class TestFilterIndexReader extends TestCase {
     
     /** Filter that only returns odd numbered documents. */
     private static class TestTermPositions extends FilterTermPositions {
-      public TestTermPositions(TermPositions in)
-        throws IOException {
+      public TestTermPositions(TermPositions in) {
         super(in);
       }
 

src/test/org/apache/lucene/search/TestFilteredQuery.java

@@ -25,8 +25,6 @@ import org.apache.lucene.index.IndexReader;
 import org.apache.lucene.index.Term;
 import org.apache.lucene.store.RAMDirectory;
 import java.util.BitSet;
-import java.io.IOException;
-
 
 /**
  * FilteredQuery JUnit tests.
@@ -76,7 +74,7 @@ extends TestCase {
     searcher = new IndexSearcher (directory);
     query = new TermQuery (new Term ("field", "three"));
     filter = new Filter() {
-      public BitSet bits (IndexReader reader) throws IOException {
+      public BitSet bits (IndexReader reader) {
         BitSet bitset = new BitSet(5);
         bitset.set (1);
         bitset.set (3);

src/test/org/apache/lucene/search/TestPositionIncrement.java

@@ -30,7 +30,6 @@ import org.apache.lucene.document.Document;
 import org.apache.lucene.document.Field;
 
 import java.io.Reader;
-import java.io.IOException;
 import java.io.StringReader;
 
 import junit.framework.TestCase;
@@ -51,7 +50,7 @@ public class TestPositionIncrement extends TestCase {
           private final int[] INCREMENTS = {1, 2, 1, 0, 1};
           private int i = 0;
 
-          public Token next() throws IOException {
+          public Token next() {
             if (i == TOKENS.length)
               return null;
             Token t = new Token(TOKENS[i], i, i);