Hashtable clone() Method in Java
Last Updated :
28 Jun, 2018
The java.util.Hashtable.clone() method is used to return a shallow copy of the mentioned hash table. It just creates a copy of the table.
Syntax:
Hash_Table.clone()
Parameters: The method does not take any parameters.
Return Value: The method just returns a copy of the Hashtable.
Below programs are used to illustrate the working of java.util.Hashtable.clone() Method:
Program 1:
import java.util.*;
public class Hash_Table_Demo {
public static void main(String[] args)
{
Hashtable<Integer, String> hash_table = new Hashtable<Integer, String>();
hash_table.put( 10 , "Geeks" );
hash_table.put( 15 , "4" );
hash_table.put( 20 , "Geeks" );
hash_table.put( 25 , "Welcomes" );
hash_table.put( 30 , "You" );
System.out.println( "The Hashtable is: " + hash_table);
System.out.println( "The cloned table look like this: "
+ hash_table.clone());
}
}
|
Output:
The Hashtable is: {10=Geeks, 20=Geeks, 30=You, 15=4, 25=Welcomes}
The cloned table look like this: {10=Geeks, 20=Geeks, 30=You, 15=4, 25=Welcomes}
Program 2:
import java.util.*;
public class Hash_Table_Demo {
public static void main(String[] args)
{
Hashtable<String, Integer> hash_table = new Hashtable<String, Integer>();
hash_table.put( "Geeks" , 10 );
hash_table.put( "4" , 15 );
hash_table.put( "Geeks" , 20 );
hash_table.put( "Welcomes" , 25 );
hash_table.put( "You" , 30 );
System.out.println( "The Hashtable is: " + hash_table);
System.out.println( "The cloned table look like this: "
+ hash_table.clone());
}
}
|
Output:
The Hashtable is: {You=30, Welcomes=25, 4=15, Geeks=20}
The cloned table look like this: {You=30, Welcomes=25, 4=15, Geeks=20}
Note: The same operation can be performed with any type of variation and combination of different data types.
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