Hashtable containsKey Example
Hashtable class containsKey method example. This example shows you how to use containsKey method.
Hashtable class containsKey method example.Tests if the specified object is a key in this hashtable.
syntax -public boolean containsKey(Object key)
Her is the code
/**
* @ # ContainsKey.java
* A class repersenting use to containsKey method
* of HashMap class in java.util package
* version 19 May 2008
* author Rose India
*/
import java.util.*;
public class ContainsKey {
public static void main(String[] arsg) {
Hashtable table = new Hashtable();
table.put(1, "A");
table.put(2, "B");
table.put(3, "C");
table.put(4, "D");
System.out.println("table :" + table);
System.out.println("Table containkey 1 : " + table.containsKey(1));
}
} |
Output
table :{4=D, 3=C, 2=B, 1=A}
Table containkey 1 : true |
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