Update Main.java

EAlexan · EAlexan · commit dd73b46a25d1 · 2020-03-20T21:56:35.000+01:00
fixing bug
Program is causing a NoSuchElementException
diff --git a/DataStructures/HashMap/Hashing/Main.java b/DataStructures/HashMap/Hashing/Main.java
@@ -8,16 +8,15 @@ public static void main(String[] args) {
 		int choice, key;
 
 		HashMap h = new HashMap(7);
+		Scanner In = new Scanner(System.in);
 
 		while (true) {
 			System.out.println("Enter your Choice :");
 			System.out.println("1. Add Key");
 			System.out.println("2. Delete Key");
 			System.out.println("3. Print Table");
 			System.out.println("4. Exit");
-
-			Scanner In = new Scanner(System.in);
-
+			
 			choice = In.nextInt();
 
 			switch (choice) {
@@ -39,10 +38,11 @@ public static void main(String[] args) {
 					break;
 				}
 				case 4: {
+					In.close();
 					return;
 				}	
 			}
-			In.close();
+			
 		}
 	}
 }

Original file line number	Diff line number	Diff line change
`@@ -8,16 +8,15 @@ public static void main(String[] args) {`
`8`	`8`	`int choice, key;`
`9`	`9`
`10`	`10`	`HashMap h = new HashMap(7);`
	`11`	`+ Scanner In = new Scanner(System.in);`
`11`	`12`
`12`	`13`	`while (true) {`
`13`	`14`	`System.out.println("Enter your Choice :");`
`14`	`15`	`System.out.println("1. Add Key");`
`15`	`16`	`System.out.println("2. Delete Key");`
`16`	`17`	`System.out.println("3. Print Table");`
`17`	`18`	`System.out.println("4. Exit");`
`18`		`-`
`19`		`- Scanner In = new Scanner(System.in);`
`20`		`-`
	`19`	`+`
`21`	`20`	`choice = In.nextInt();`
`22`	`21`
`23`	`22`	`switch (choice) {`
`@@ -39,10 +38,11 @@ public static void main(String[] args) {`
`39`	`38`	`break;`
`40`	`39`	`}`
`41`	`40`	`case 4: {`
	`41`	`+ In.close();`
`42`	`42`	`return;`
`43`	`43`	`}`
`44`	`44`	`}`
`45`		`- In.close();`
	`45`	`+`
`46`	`46`	`}`
`47`	`47`	`}`
`48`	`48`	`}`