泛型

XGerry · XGerry · commit f94f1e34c334 · 2018-08-14T15:39:21.000+08:00
diff --git a/src/GenericsDemo.java b/src/GenericsDemo.java
@@ -0,0 +1,44 @@
+/**
+ * 泛型
+ */
+public class GenericsDemo {
+    public static void main(String[] args) {
+        Pair<Integer, String> pair = new Pair<>(1, "apple");
+        Pair<Integer, String> pair1 = new Pair<>(2, "Pear");
+        boolean isSame;
+        if (compare(pair, pair1)) isSame = true;
+        else isSame = false;
+        System.out.println(isSame);
+    }
+
+    public static <K, V> boolean compare(Pair<K, V> p1, Pair<K, V> p2) {
+        return p1.getKey().equals(p2.getKey()) &&
+                p1.getValue().equals(p2.getValue());
+    }
+}
+
+class Pair<K, V> {
+    private K key;
+    private V value;
+
+    public Pair(K key, V value) {
+        this.key = key;
+        this.value = value;
+    }
+
+    public void setKey(K key) {
+        this.key = key;
+    }
+
+    public void setValue(V value) {
+        this.value = value;
+    }
+
+    public K getKey() {
+        return key;
+    }
+
+    public V getValue() {
+        return value;
+    }
+}
