1 package org.apache.torque.util; 2 3 21 22 import java.util.ArrayList ; 23 24 30 public class UniqueList extends ArrayList  31 { 32 35 private static final long serialVersionUID = 4467847559423445120L; 36 37 40 public UniqueList() 41 { 42 } 43 44 48 public UniqueList(UniqueList list) 49 { 50 this.addAll(list); 51 } 52 53 59 public boolean add(Object o) 60 { 61 if (o != null && !contains(o)) 62 { 63 return super.add(o); 64 } 65 return false; 66 } 67 } 68 | Popular Tags |