JAVA - Hogyan kell feltolteni a tombot?

Ez az osztaly:

public class DataA implements Serializable {

public int[] getDatasA() {

return datasA;

}

public void setDatasA(int[] datasA) {

this.datasA = datasA;

}

private int[] datasA = new int[100];

}

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public class Main {

public static void main(String[] args) {

DataA a = new DataA();

a.setDatasA(); // ?!?

}

}