RFR: 8341453: java/awt/a11y/AccessibleJTableTest.java fails in some cases where the test tables are not visible

[Manukumar V S]

This issue can be fixed by setting the preferred scrollable viewport size of the two tables using
        JTable table = new JTable(data, columnNames);
    +  table.setPreferredScrollableViewportSize(table.getPreferredSize());
        JTable secondTable = new JTable(data, columnNames);
    +  secondTable.setPreferredScrollableViewportSize(secondTable.getPreferredSize());
    
    The other changes in imports section are just re-arrangements and expansion of imports.

Testing: This is a manual test and it is tested and verified manually in my local system

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Commit messages:
 - 8341453: java/awt/a11y/AccessibleJTableTest.java fails in some cases where the test tables are not visible

Changes: https://git.openjdk.org/jdk/pull/21549/files
  Webrev: https://webrevs.openjdk.org/?repo=jdk&pr=21549&range=00
  Issue: https://bugs.openjdk.org/browse/JDK-8341453
  Stats: 10 lines in 1 file changed: 5 ins; 1 del; 4 mod
  Patch: https://git.openjdk.org/jdk/pull/21549.diff
  Fetch: git fetch https://git.openjdk.org/jdk.git pull/21549/head:pull/21549

PR: https://git.openjdk.org/jdk/pull/21549