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  1. /* package whatever; // don't place package name! */
  2.  
  3. import java.util.*;
  4. import java.lang.*;
  5. import java.io.*;
  6.  
  7. /* Name of the class has to be "Main" only if the class is public. */
  8. class Ideone
  9. {
  10.  
  11.     private HashMap<Object, Object> hashMap;
  12.  
  13.     public Ideone() {
  14.         this.hashMap = new HashMap<>();
  15.     }
  16.  
  17.     // Insert operation
  18.     public void insert(Object key, Object value) {
  19.         hashMap.put(key, value);
  20.     }
  21.  
  22.     // Get operation
  23.     public Object get(Object key) {
  24.         return hashMap.get(key);
  25.     }
  26.  
  27.     // Delete operation
  28.     public void delete(Object key) {
  29.         hashMap.remove(key);
  30.     }
  31.  
  32.     public static void main(String[] args) {
  33.         Ideone cto = new Ideone();
  34.  
  35.         // Insertions
  36.         cto.insert(1, "One");
  37.         cto.insert(2, "Two");
  38.         cto.insert("Three", 3);
  39.         cto.insert("Array", new int[]{1, 2, 3});
  40.  
  41.         // Get operations
  42.         System.out.println(cto.get(1));        // Output: One
  43.         System.out.println(cto.get(2));        // Output: Two
  44.         System.out.println(cto.get("Three"));  // Output: 3
  45.         System.out.println(cto.get("Array"));  // Output: [I@
  46. }
  47. }
Success #stdin #stdout 0.08s 54652KB
comments (?)
stdin 
Standard input is empty
stdout 
One
Two
3
[I@2ff4acd0
https://ideone.com/bCGmG9
language:
Java (HotSpot 12)
created:
19 days ago
visibility:
public

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