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32 lines
632 B
32 lines
632 B
public class JavaApplication1 {
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public static void main(String[] args) {
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System.out.println("Hello World!");
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Calculator calc = new Calculator();
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System.out.println("2+2=" + calc.sum(2, 2));
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}
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public static class Adder {
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private int sum;
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public Adder() { sum = 0; }
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public Adder(int a) { this.sum = a; }
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public void add (int b) {
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sum += b;
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}
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public int getSum() { return sum; }
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}
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public static class Calculator {
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public int sum(int... a) {
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Adder adder = new Adder();
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for (int i:a) {
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adder.add(i);
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}
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return adder.getSum();
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}
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}
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};
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