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17 lines
760 B
17 lines
760 B
public class TestPairSwap {
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public static void main(String[] args) {
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// 1. 原始 Pair：String + Integer（姓名-年龄）
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Pair<String, Integer> person = new Pair<>("张三", 20);
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System.out.println("交换前：" + person);
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// 2. 调用静态 swap 方法，得到交换后的 Pair
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Pair<Integer, String> swappedPerson = Pair.swap(person);
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System.out.println("交换后：" + swappedPerson);
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// 3. 相同类型的 Pair 也可以正常使用
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Pair<Double, Double> point = new Pair<>(116.40, 39.90);
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System.out.println("交换前坐标：" + point);
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Pair<Double, Double> swappedPoint = Pair.swap(point);
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System.out.println("交换后坐标：" + swappedPoint);
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}
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}
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