Java Vector removeRange() Method | Rookie Tutorial

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Java Vector removeRange() Method

Java Vector

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The removeRange() method is a protected method provided by the Vector class in Java, used to remove all elements within a specified range from the Vector. This method is defined in the java.util.Vector class, inherited from the java.util.AbstractList class.

Syntax

protected void removeRange(int fromIndex, int toIndex)

Parameters

Parameter Name	Type	Description
fromIndex	int	The index of the first element to be removed (inclusive)
toIndex	int	The index after the last element to be removed (exclusive)

Method Characteristics

1. Range Removal: Can remove multiple elements in a continuous range at once
2. Index Boundaries:
   • fromIndex must be less than or equal to toIndex
   • Both indexes must be within the valid range of the Vector (0 ≤ fromIndex ≤ toIndex ≤ size())
3. Performance Impact: After removing elements, all subsequent elements' indexes will shift forward accordingly
4. Protected Method: Can only be called directly in subclasses of Vector, or through reflection mechanism

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Usage Example

Example

import java.util.Vector;

public class CustomVector<E>ext