java.lang.IllegalArgumentException: im == null!

coderanch.com | 8 months ago
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    java.lang.IllegalArgumentException: im == null!

    Coderanch | 6 years ago | Simanto Chakraborty
    java.lang.IllegalArgumentException: im == null!
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    java image byte array to grayscale back to image

    Stack Overflow | 5 months ago | Jerry Cheng
    java.lang.IllegalArgumentException: image == null!

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    Root Cause Analysis

    1. java.lang.IllegalArgumentException

      im == null!

      at javax.imageio.ImageIO.write()
    2. Java RT
      ImageIO.write
      1. javax.imageio.ImageIO.write(Unknown Source)
      2. javax.imageio.ImageIO.write(Unknown Source)
      2 frames
    3. Unknown
      Main.main
      1. Main.main(Main.java:37)
      1 frame
    4. Java RT
      Method.invoke
      1. sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
      2. sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
      3. sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
      4. java.lang.reflect.Method.invoke(Unknown Source)
      4 frames
    5. edu.rice.cs
      JavacCompiler.runCommand
      1. edu.rice.cs.drjava.model.compiler.JavacCompiler.runCommand(JavacCompiler.java:271)
      1 frame