package example; public class CalculatorInput { private Integer n1; private Integer n2; public Integer getN1() { return n1; } public void setN1(Integer n1) { this.n1 = n1; } public Integer getN2() { return n2; } public void setN2(Integer n2) { this.n2 = n2; } @Override public String toString() { return "CalculatorInput{" + "n1=" + n1 + ", n2=" + n2 + '}'; } }