You can introduce a try-with-resources block to specify the maximum allowed # of objects allocated and/or # bytes allocated by the inside of that try block.

For example:

void doSomeWork() {
    try (Allocheck _ = new Allocheck(1, 1)) {
        for (int i = 0; i < 5; i++) {
            new Object().hashCode();
            Integer.parseInt(String.valueOf(i));
        }
    }
}

Will output something like this:

[Number of objects allocated exceeded max: 15 > 1, Number of bytes allocated exceeded max: 240 > 1]

Allocations by type, ordered by count:
"Count","Total Bytes","Type"
"5","40","java/lang/Object"
"5","80","char"
"5","120","java/lang/String"

Allocations by code path, ordered by total bytes:
"Count","Total Bytes","Type and Stack"
"5","120","java/lang/String
    at java.lang.Integer.toString(Integer.java:333)
    at java.lang.String.valueOf(String.java:2959)
    at com.brianfromoregon.allocheck.Main.doSomeWork(Main.java:19)"
"5","80","char
    at java.lang.Integer.toString(Integer.java:331)
    at java.lang.String.valueOf(String.java:2959)
    at com.brianfromoregon.allocheck.Main.doSomeWork(Main.java:19)"
"5","40","java/lang/Object
    at com.brianfromoregon.allocheck.Main.doSomeWork(Main.java:18)"