hps-java/src/main/java/org/lcsim/hps/users/phansson

diff -N TestSort.java
--- /dev/null	1 Jan 1970 00:00:00 -0000
+++ TestSort.java	20 Apr 2013 01:05:08 -0000	1.1
@@ -0,0 +1,79 @@

+/*
+ * To change this template, choose Tools | Templates
+ * and open the template in the editor.
+ */
+package org.lcsim.hps.users.phansson;
+
+import java.util.ArrayList;
+import java.util.Collections;
+import java.util.List;
+
+/**
+ *
+ * @author phansson
+ */
+public class TestSort {
+
+    public static class CmpClass implements Comparable<CmpClass> {
+        private int _val;
+        public CmpClass(int i) {
+            _val = i;
+        }
+        public void set(int i) {
+            _val = i;
+        }
+        public int get() {
+            return _val;
+        }
+
+        @Override
+        public int compareTo(CmpClass o) {
+            return o._val-_val;
+        }        
+    
+    }
+    
+    
+    /**
+     * @param args the command line arguments
+     */
+    public static void main(String[] args) {
+        
+        List<CmpClass> list = new ArrayList<>();
+        list.add(new CmpClass(1));
+        list.add(new CmpClass(2));
+        list.add(new CmpClass(3));
+
+        System.out.printf("list:\n");
+        
+        for (CmpClass c : list) {
+            System.out.printf("%d\n",c._val);
+        }
+
+        Collections.sort(list);
+
+        System.out.printf("after sort:\n");
+        
+        for (CmpClass c : list) {
+            System.out.printf("%d\n",c._val);
+        }
+
+        list.get(1).set(4);
+
+        System.out.printf("list:\n");
+       
+        for (CmpClass c : list) {
+            System.out.printf("%d\n",c._val);
+        }
+
+        Collections.sort(list);
+
+        System.out.printf("after sort:\n");
+        
+        for (CmpClass c : list) {
+            System.out.printf("%d\n",c._val);
+        }
+
+    
+    }
+}