java sample program scanner with hashmap sample program

java sample program scanner with hashmap sample program

java sample program scanner with hashmap java sample program scanner with
hashmap java sample program scanner with hashmap copy the full code and
paste it there is no error
sampe proaram
running in eclipse
import java.util.*;
import java.util.Map.Entry;
public class ExampleWithScannerAndHashMap {
public static void main(String[] args) {
int count = 0;// stores the number of names
// Scanner the reads the user input from standard input stream
Scanner in = new Scanner(System.in);
// Request user input till getting a valid number
System.out.println("Enter the Number of Names U wants to display :");
while (true) {
try {
// Read the user input and convert into integer
count = in.nextInt();
// If it is a valid number break the loop
break;
} catch (InputMismatchException e) {
// If it is not a valid number show the error msg
System.out.println("Please enter a valid number : ");
}
}
in.nextLine(); // reads the enter char from buffer
// Hashmap to store the names
Map<String, String> hashMap = new HashMap<String, String>();
for (int i = 1; i <= count; i++) {
System.out.println("Enter Name " + i + " : ");
// Add the names to hashmap with different keys
hashMap.put("name" + i, in.nextLine());
}
// Print the names in the hashmap
printValues(hashMap);
System.out.println("Enter a key to delete : ");
String key = in.nextLine();
if (hashMap.containsKey(key)) {
hashMap.remove(key);
System.out.println("The element with key " + key
+ " has been removed successfully");
} else {
System.out.println("The entered key does not exists");
}
//Clears the hashmap
hashMap.clear();
// close the scanner to release the resource
in.close();
}
public static void printValues(Map<String, String> hashMap) {
Iterator<Entry<String, String>> iterator = hashMap.entrySet()
.iterator();
System.out.println("There are " + hashMap.size() + " elements in
HashMap. They are ");
System.out.println("Key : Value");
while (iterator.hasNext()) {
Entry<String,String> entry = iterator.next();
System.out.println(entry.getKey() + " : "
+ entry.getValue());
}
}
}