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  1. JDK
  2. JDK-8288854

getLocalGraphicsEnvironment() on for multi-screen setups throws exception NPE

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    • b30
    • generic
    • generic

    Backports

      Description

        ADDITIONAL SYSTEM INFORMATION :
        Linux - Centos 7

        A DESCRIPTION OF THE PROBLEM :
        See bugs.freebsd.org Bug 264356 - java/openjdk17: java.awt.GraphicsEnvironment.getLocalGraphicsEnvironment() on for multi-screen setups throws exception: Cannot read the array length because "this.screens" is null


        STEPS TO FOLLOW TO REPRODUCE THE PROBLEM :
        Run java app that uses call to getLocalGraphicsEnvironment on multi-screen display with Xinerama disabled - display to screen number not zero.
        As described in the freebsd bug report - It is easy to duplicate using xephyr:
        Xephyr :3 -screen 800x600 -screen 800x600


        EXPECTED VERSUS ACTUAL BEHAVIOR :
        EXPECTED -
        Program should run
        ACTUAL -
        Null Pointer Exception

        ---------- BEGIN SOURCE ----------
        See above
        ---------- END SOURCE ----------

        CUSTOMER SUBMITTED WORKAROUND :
        Fix suggested in above bug report.

        FREQUENCY : always


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            backported by

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8289628 getLocalGraphicsEnvironment() on for multi-screen setups throws exception NPE

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8291214 getLocalGraphicsEnvironment() on for multi-screen setups throws exception NPE

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8291377 getLocalGraphicsEnvironment() on for multi-screen setups throws exception NPE

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8299417 getLocalGraphicsEnvironment() on for multi-screen setups throws exception NPE

            • P3 - Major loss of function.
            • Resolved

            Backport - A issue that is required to port a Bug or Feature into another product release. This issue type is generally associated with the main Bug/Feature to represent each individual release of the port. JDK-8301796 getLocalGraphicsEnvironment() on for multi-screen setups throws exception NPE

            • P3 - Major loss of function.
            • Resolved
            relates to

            Enhancement - null JDK-8076313 GraphicsEnvironment does not detect changes in count of monitors on Linux OS

            • P3 - Major loss of function.
            • Resolved
            links to

            Commit Commit openjdk/jdk17u-dev/cec5a0ce

            Commit Commit openjdk/jdk19/cfc9a881

            Review Review openjdk/jdk17u-dev/994

            Review Review openjdk/jdk19/81

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                serb Sergey Bylokhov
                webbuggrp Webbug Group
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                Dates

                  Created:
                  Updated:
                  Resolved: