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(JAVA-W0146) Throw exception in next method #10

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(JAVA-W0146) Throw exception in next method #10

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9 changes: 7 additions & 2 deletions src/edu/duke/TextIterable.java
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Original file line number Diff line number Diff line change
@@ -1,6 +1,7 @@
package edu.duke;

import java.util.Iterator;
import java.util.NoSuchElementException;

/**
* This utility class allows multiple classes to iterate over a text source in multiple ways.
Expand All @@ -12,7 +13,7 @@
* http://www.apache.org/licenses/LICENSE-2.0 for details.
*/
class TextIterable implements Iterable<String> {
private String[] myStrings;
private final String[] myStrings;

/** Create from a given string. */
public TextIterable(String source, String regexp) {
Expand All @@ -33,7 +34,11 @@ public boolean hasNext() {
}

@Override
public String next() {
public String next() throws NoSuchElementException {
if (!hasNext()) {
throw new NoSuchElementException("No more elements in the iteration");
}

String s = myStrings[myCount];
myCount++;
return s;
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