java.lang.NumberFormatException: null

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You try to parse a String that contains non-numeric characters to an int. The string must contain decimal characters only, optionally beginning with a + or - sign.

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Can occur when you try to convert a String to a numeric value but the String is not well formatted for the conversion.

java.lang.NumberFormatException: null
at java.lang.Integer.parseInt(Integer.java:415)
at java.lang.Integer.parseInt(Integer.java:497)
at com.xindeco.business.service.impl.DemandServiceImpl.findDemandListByUnitId(DemandServiceImpl.java:33)

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