Java泛型比较

public class Pair<T> {
    private T first;
    private T second;

    public Pair(T first, T second) {
        this.first = first;
        this.second = second;
    }

    // 其他方法
}

Pair<Integer> pair = new Pair<>(1, 2);

public class ComparablePair<T extends Comparable<T>> {
    private T first;
    private T second;

    public ComparablePair(T first, T second) {
        this.first = first;
        this.second = second;
    }

    public int compare() {
        return first.compareTo(second);
    }
}

public class StringPair {
    private String first;
    private String second;

    public StringPair(String first, String second) {
        this.first = first;
        this.second = second;
    }

    public int compare() {
        return first.compareTo(second);
    }
}