Generic method to copy Of Range array - Android java.lang

Android examples for java.lang:Array Element

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Description

Generic method to copy Of Range array

Demo Code


//package com.java2s;
import java.lang.reflect.Array;

public class Main {
    @SuppressWarnings("unchecked")
    public static <T> T[] copyOfRange(T[] original, int start, int end) {
        int originalLength = original.length; // For exception priority compatibility.
        if (start > end) {
            throw new IllegalArgumentException();
        }//from w w  w.  j  a v  a  2s  .  c om
        if (start < 0 || start > originalLength) {
            throw new ArrayIndexOutOfBoundsException();
        }
        int resultLength = end - start;
        int copyLength = Math.min(resultLength, originalLength - start);
        T[] result = (T[]) Array.newInstance(original.getClass()
                .getComponentType(), resultLength);
        System.arraycopy(original, start, result, 0, copyLength);
        return result;
    }
}

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