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  1. JDK
  2. JDK-7132375

JComboBox.getSelectedItem() not generic

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    • Icon: Enhancement Enhancement
    • Resolution: Not an Issue
    • Icon: P4 P4
    • 8-pool
    • 7
    • client-libs

      A DESCRIPTION OF THE REQUEST :
      If a generic JComboBox<E> is created, getSelectedItem() should have return type E.

      JUSTIFICATION :
      JComboBox is incompletely generified.


      EXPECTED VERSUS ACTUAL BEHAVIOR :
      EXPECTED -
      JComboBox<String> jcb = new JComboBox<>();
      jcb.addItem("Hello");
      String str = jcb.getSelectedItem();

      should compile without errors.
      ACTUAL -
      error: incompatible types
      required: String
      found: Object


      ---------- BEGIN SOURCE ----------
      package com.xyz.test;

      import javax.swing.JComboBox;

      public class Test
      {
      public static void main(final String args[])
      {
      JComboBox<String> jcb = new JComboBox<>();
      jcb.addItem("Hello");

      //String str = jcb.getSelectedItem(); // error: incompatible types
      // required: String
      // found: Object
      String str1 = jcb.getItemAt(jcb.getSelectedIndex()); // OK
      }
      }
      ---------- END SOURCE ----------

      CUSTOMER SUBMITTED WORKAROUND :
      getItemAt(jcb.getSelectedIndex());

            rupashka Pavel Porvatov (Inactive)
            webbuggrp Webbug Group
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