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Author: disha2sinha

Classes and objects/SwapObjects2Solution.java

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+//A java Program to demostrate wrapper class to swap objects of a car
+class Box
+{
+    int no;
+    float length;
+    float depth;
+    float width;
+    Box(int n,float l,float d,float w)
+    {
+        no=n;
+        length=l;
+        depth=d;
+        width=w;
+    }
+    void characteristics()
+    {
+        System.out.println("Box Number:"+no+" Length:"+length+" Depth:"+depth+" Width:"+width);
+    }
+}
+
+//Wrapper class
+class BoxWrapper
+{
+    Box myBox;
+    BoxWrapper(Box obj)
+    {
+        myBox=obj;
+    }
+}
+
+/**
+ * SwapObjects2Solution
+ */
+public class SwapObjects2Solution {
+
+    public static void swap(BoxWrapper mybox1,BoxWrapper mybox2) {
+        Box temp=mybox1.myBox;
+        mybox1.myBox=mybox2.myBox;
+        mybox2.myBox=temp;
+    }
+    public static void main(String[] args) {
+        Box box1=new Box(1,30f,45.5f,67.8f);
+        Box box2=new Box(2,57f,90f,10f);
+        BoxWrapper boxw1=new BoxWrapper(box1);
+        BoxWrapper boxw2=new BoxWrapper(box2);
+        swap(boxw1,boxw2);
+        boxw1.myBox.characteristics();
+        boxw2.myBox.characteristics();
+
+    }
+}