# Sorting and Sets

> StringZilla for Java

```java
long[] order = new long[items.size()];
int sorted = StringZilla.argSort(items, order, false, 0, false); // stable permutation over List<byte[]>

long[] lineOrder = new long[lineCount];
StringZilla.argSort(buffer, starts, lengths, lineOrder, false, 0, false); // sort one buffer's segments

long[] firstPositions = new long[Math.min(left.size(), right.size())];
long[] secondPositions = new long[firstPositions.length];
int matches = StringZilla.intersect(left, right, firstPositions, secondPositions); // matching index pairs
```

A failed native call throws `StringZilla.StatusException`, whose `status()` is the C `sz_status_t` code and `statusName()` its enumerator name.