Java comparing generic types

You cannot overload operators in Java. The < operator only applies to primitive (or numeric) types, not reference types. Since T is a type variable that represents a reference type, you cannot use < on variables of type T. You have to use

if (item.compareTo(bn.item) < 0)

check the value returned and decide to do what you wish with it.

You don’t know what the type T will be but you know that it will be a type that implements Comparable and therefore implements the compareTo() method.

Related Posts:

  1. Raw use of parameterized class
  2. Create a List of primitive int?
  3. Insert Dimensions to complete Expression/ReferenceType
  4. How to convert int[] to Integer[] in Java?
  5. How to create a generic array in Java?
  6. Instantiating object of type parameter
  7. How do I make the method return type generic?
  8. Error: Generic Array Creation
  9. What’s the reason I can’t create generic array types in Java?
  10. Why are two empty ArrayLists with different generic types equal?
  11. How to cast ArrayList<> from List<>
  12. Generic stack implementation
  13. How to cast ArrayList<> from List<>
  14. Java- The meaning of >?
  15. How Do I Implement an Insertion Sort Method for A Generic ArrayList?
  16. Troubleshooting “The type parameter T is hiding the type T” warning
  17. How do I create a file and write to it?
  18. When to use LinkedList over ArrayList in Java?
  19. How to convert a char to a String?
  20. How do you create a dictionary in Java? [closed]
  21. How do I declare and initialize an array in Java?
  22. Convert list to array in Java [duplicate]
  23. Convert String to double in Java
  24. Initialization of an ArrayList in one line
  25. Is there a Heap in java?
  26. What’s the difference between map() and flatMap() methods in Java 8?
  27. Why do we need copy constructor and when should we use copy constructor in java
  28. What are the -Xms and -Xmx parameters when starting JVM?
  29. How to match “any character” in regular expression?
  30. Running JAR file on Windows 10
  31. Iterate through a HashMap [duplicate]
  32. Non-static variable cannot be referenced from a static context
  33. JAVA invalid maximum heap size. The specified size exceeds the maximum representable size
  34. JDK9: An illegal reflective access operation has occurred. org.python.core.PySystemState
  35. I want to declare an empty array in java and then I want do update it but the code is not working
  36. Usage of @see in JavaDoc?
  37. Hadoop “Unable to load native-hadoop library for your platform” warning
  38. Unreported exception java.lang.Exception; must be caught or declared to be thrown
  39. How to clear the console?
  40. How to capitalize the first letter of a String in Java?
  41. Scanner vs. BufferedReader
  42. Why do I get “Exception; must be caught or declared to be thrown” when I try to compile my Java code?
  43. Check jdk/JRE is installed and get path for jvm.dll
  44. What is Java String interning?
  45. Rename a file using Java
  46. What is “String args[]”? parameter in main method Java
  47. “A java exception has occurred” when opening .jar
  48. How do I set environment variables from Java?
  49. Exception in thread “main” java.lang.ArrayIndexOutOfBoundsException: 0 error in Java
  50. What’s the advantage of load() vs get() in Hibernate?
  51. What Java ORM do you prefer, and why?
  52. Always Round UP a Double
  53. Using Enum values as String literals
  54. How do I draw a triangle?
  55. warning: [options] bootstrap class path not set in conjunction with -source 1.5
  56. “Actual or formal argument lists differs in length”
  57. TreeMap sort by value
  58. Encrypt Password in Configuration Files?
  59. Could not find method compile() for arguments Gradle
  60. How can I get the current stack trace in Java?
  61. java.util.zip.ZipException: error in opening zip file
  62. Eclipse java debugging: source not found
  63. IntelliJ – Can’t start – “JAVA_HOME does not point to a valid JVM installation”
  64. Empty an array in Java / processing
  65. Class is not Abstract and does not Override error in Java
  66. hibernate properties not found
  67. Make a simple timer in Java
  68. How to switch scenes in JavaFX
  69. Corrupt jar file
  70. Replace a character at a specific index in a string?
  71. Error array dimension missing
  72. How to detect EOF in Java?
  73. Information about _JAVA_OPTIONS
  74. Two dimensional array list
  75. Must issue a STARTTLS command first
  76. Convert boolean to int in Java
  77. How to convert a String to CharSequence?
  78. Aspect Ratio with 800×480
  79. How do I convert a String to a BigInteger?
  80. How to set JAVA_HOME in Linux for all users
  81. What is ‘PermSize’ in Java?
  82. Jackson with JSON: Unrecognized field, not marked as ignorable
  83. Creating a Calendar using javafx
  84. A tool for calculating the big-O time complexity of Java code? [closed]
  85. How to print binary tree diagram in Java?
  86. Must qualify the allocation with an enclosing instance of type GeoLocation
  87. Unknown version of Tomcat was specified in Eclipse
  88. How to compare character ignoring case in primitive types
  89. How can I wait for 10 second without locking application UI in android [duplicate]
  90. Java error “Value of local variable is not used”
  91. Is there a way to end the program if statement is false?
  92. ArithmeticException: “Non-terminating decimal expansion; no exact representable decimal result”
  93. convert string to arraylist in java
  94. how to use drawArc()
  95. How to add RGB values into setColor() in Java?
  96. toring and Retrieving ArrayList values from hashmap
  97. Could not find or load main class with a Jar File
  98. “uses unchecked or unsafe operations” [duplicate]
  99. How do I enable index downloads in Eclipse for Maven dependency search?
  100. How to convert java.util.Date to java.sql.Date?

Leave a Comment