Update ParseInteger.java

lollerfirst · web-flow · commit 7179718df290 · 2020-06-09T08:40:46.000+02:00
Fixed error for empty string.
diff --git a/Maths/ParseInteger.java b/Maths/ParseInteger.java
@@ -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) == '-';

Original file line number	Diff line number	Diff line change
`@@ -16,7 +16,7 @@ public static void main(String[] args) {`
`16`	`16`	`* @throws NumberFormatException if the {@code string} does not contain a parsable integer.`
`17`	`17`	`*/`
`18`	`18`	`public static int parseInt(String s) {`
`19`		`- if (s == null) {`
	`19`	`+ if (s == null \|\| s.length() == 0) {`
`20`	`20`	`throw new NumberFormatException("null");`
`21`	`21`	`}`
`22`	`22`	`boolean isNegative = s.charAt(0) == '-';`