Lets learn ArrayList contains[Object o] method in java.
ArrayList contains[Object o] method in java
contains[Object o] method of ArrayList class returns true if this list contains the specified element. More formally, returns true if and only if this list contains at least one element e such that Objects.equals[o, e].
Syntax:
public boolean contains[Object o]
Parameters:
o element whose presence in this list is to be tested.
Returns:
true if this list contains the specified element.
Now lets see example on ArrayList contains[Object o] method.
import java.util.ArrayList;
public class ArrayListContainsMethodExample
{
public static void main[String[] args]
{
ArrayList names = new ArrayList[5];
names.add["virat"];
names.add["dhoni"];
names.add["rohit"];
names.add["vijay"];
names.add["ajay"];
System.out.println["Names: " + names];
System.out.print["Does list contains name dhoni?: "];
System.out.println[names.contains["dhoni"]];
System.out.print["Does list contains name Sudhakar?: "];
System.out.println[names.contains["Sudhakar"]];
}
}
Output:
Names: [virat, dhoni, rohit, vijay, ajay]
Does list contains name dhoni?: true
Does list contains name Sudhakar?: false
Also read java overview
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