java.lang.NumberFormatException: For input string: "

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Root Cause Analysis

  1. java.lang.NumberFormatException

    For input string: "

    at java.lang.NumberFormatException.forInputString()
  2. Java RT
    Integer.valueOf
    1. java.lang.NumberFormatException.forInputString(NumberFormatException.java:48)
    2. java.lang.Integer.parseInt(Integer.java:468)
    3. java.lang.Integer.valueOf(Integer.java:574)
    3 frames
  3. Unknown
    Starts.main
    1. Shape.SetCenterX(Shape.java:10)
    2. Rectangle.<init>(Rectangle.java:6)[this is because I select rectangle to test]
    3. Starts.main(Starts.java:46)[which is where my call to the rectangle constructor is placed]
    3 frames