how to increase array size dynamically in java

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private static Object resizeArray (Object oldArray, int newSize) { int oldSize = java.lang.reflect.Array.getLength(oldArray); Class elementType = oldArray.getClass().getComponentType(); Object newArray = java.lang.reflect.Array.newInstance( elementType, newSize); int preserveLength = Math.min(oldSize, newSize); if (preserveLength > 0) System… void dynArray( int size ) { String[] strArray = new String[size];} This will allocate the size array you want, dynamically. Java ArrayList is nothing but a part of Java Collection Framework and resided in Java.util package. So, what happens internally is, a new Array is created and the old array is c… How to declare a static String array in Java. If not, a new array of a greater size is created, the old array is copied to new array using Arrays.copyOf and the new array is assigned to the existing array. import java.util.Arrays; import java.util.Scanner; public class PopulatingAnArray { public static void main(String args[]) { System.out.println("Enter the required size of the array :: "); Scanner s = new Scanner(; int size = s.nextInt(); int myArray[] = new int [size]; System.out.println("Enter the elements of the array one by one "); for(int i = 0; i

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