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Update ParseInteger.java #1347

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Merged
merged 1 commit into from
Jun 12, 2020
Merged

Update ParseInteger.java #1347

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2 changes: 1 addition & 1 deletion Maths/ParseInteger.java
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Original file line number Diff line number Diff line change
Expand Up @@ -16,7 +16,7 @@ public static void main(String[] args) {
* @throws NumberFormatException if the {@code string} does not contain a parsable integer.
*/
public static int parseInt(String s) {
if (s == null) {
if (s == null || s.length() == 0) {
throw new NumberFormatException("null");
}
boolean isNegative = s.charAt(0) == '-';
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