I need the following C code converted to java or C++

#include
#include

typedef struct node {
struct node *left;
struct node *right;
long data;

long leftSize;
} node;

void btreeInsert(node *new, node **rootptr) {
node *parent = NULL, *cursor;
/* Find parent */
cursor = *rootptr;
while (cursor != NULL) {
parent = cursor;
if (new->data < cursor->data) {
cursor->leftSize += 1;
cursor = cursor->left;
} else {
cursor = cursor->right;
}
}
/* Insert node below parent */
if (parent == NULL) {
*rootptr = new;
} else if (new->data < parent->data) {
parent->left = new;
} else {
parent->right = new;
}
}

node *readTree(FILE *dataFile) {
node *root = NULL, *new;
long element;
while (fscanf(dataFile, \"%ld\n\", &element) == 1) {
new = malloc(sizeof(node));
new->data = element;
new->right = NULL;
new->left = NULL;
new->leftSize = 0;
btreeInsert(new, &root);
}
return root;
}

long kthOrder(int k, node *root) {
node *current;
current = root;
while (k != current->leftSize + 1) {
if (k <= current->leftSize) {
current = current->left;
} else {
k -= current->leftSize + 1;
current = current->right;
}
}
return current->data;
}

void reportKthOrderStats(FILE *positionFile, node *root) {
int position;
while (fscanf(positionFile, \"%i\n\", &position) == 1) {
printf(\"%ld\n\", kthOrder(position, root));
}
}

int main(int argc, const char * argv[]) {
const char *data, *range;
FILE *dataFile, *rangeFile;
node *root;

data = argv[1];
range = argv[2];
dataFile = fopen(data, \"r\");
rangeFile = fopen(range, \"r\");

root = readTree(dataFile);
reportKthOrderStats(rangeFile, root);

return (0);
}