java.lang.NullPointerException: lock == null

Stack Overflow | user2121 | 4 months ago
  1. 0

    BufferedReader causes NPE

    Stack Overflow | 4 months ago | user2121
    java.lang.NullPointerException: lock == null
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  3. 0

    I am not able to figure out what is the error in the following code for cocos2d

    Stack Overflow | 1 year ago | Manoj kumar
    java.lang.RuntimeException: Unable to start activity ComponentInfo{com.example.puzzlegame/com.example.puzzlegame.MainActivity}: java.lang.NullPointerException: lock == null
  4. 0

    Android Studio running JS java.lang.NullPointerException

    GitHub | 2 months ago | yangrenhao
    java.lang.NullPointerException: lock == null

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    Root Cause Analysis

    1. java.lang.NullPointerException

      lock == null

      at java.io.Reader.<init>()
    2. Java RT
      BufferedReader.<init>
      1. java.io.Reader.<init>(Reader.java:64)
      2. java.io.BufferedReader.<init>(BufferedReader.java:107)
      3. java.io.BufferedReader.<init>(BufferedReader.java:95)
      3 frames
    3. com.example.com
      ActMain.onOptionsItemSelected
      1. com.example.com.ecoassistant_03.Populator.populate(Populator.java:38)
      2. com.example.com.ecoassistant_03.ActMain.onOptionsItemSelected(ActMain.java:1182)
      2 frames
    4. Android Platform
      Activity.onMenuItemSelected
      1. android.app.Activity.onMenuItemSelected(Activity.java:3205)
      1 frame