Java: NullPointerException when assigned to null Boolean
When I tried to assign a null Boolean as shown below, I have a NullPointerException.
String strA = "something neither true nor false";
Boolean a = "true".equals(strA) ? true : "false".equals(strA) ? false : null;
I don't know why this happens when other cases like below work.
Boolean a = null;
Boolean a = "true".equals(strA) ? true : null;
+3
Tamajin
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1 answer
I believe this is a boxing / unboxing issue. Appointment Boolean.TRUE
or Boolean.FALSE
:
Boolean a = "true".equals(strA)
? Boolean.TRUE
: ("false".equals(strA) ? Boolean.FALSE : null);
works as expected.
+2
Alex salauyou
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