java_malloc

malloc.java

// https://www.javaspecialists.eu/archive/Issue142.html    

int[] primitiveIntArray = new int[1000];
    primitiveIntArray[0] = 256;
    primitiveIntArray[1] = 256;
    primitiveIntArray[2] = 256;
    primitiveIntArray[3] = 256;
    primitiveIntArray[4] = 256;
    measureSize(primitiveIntArray);

Integer[] iArray = new Integer[1000];
    iArray[0] = 256;
    iArray[1] = 256;
    iArray[2] = 256;
    iArray[3] = 256;
    iArray[4] = 256;
    measureSize(iArray);

// output:
// int[], shallow=4016, deep=4016
// Integer[], shallow=4016, deep=4016