SyntaxFix

Write A Post

Hire A Developer

Questions

Tags

[java] How to cast Object to boolean?

How can I cast a Java object into a boolean primitive

I tried like below but it doesn't work

boolean di = new Boolean(someObject).booleanValue();

The constructor Boolean(Object) is undefined

Please advise.

This question is related to java casting primitive

The answer is

If the object is actually a Boolean instance, then just cast it:

boolean di = (Boolean) someObject;

The explicit cast will do the conversion to Boolean, and then there's the auto-unboxing to the primitive value. Or you can do that explicitly:

boolean di = ((Boolean) someObject).booleanValue();

If someObject doesn't refer to a Boolean value though, what do you want the code to do?

Assuming that yourObject.toString() returns "true" or "false", you can try

boolean b = Boolean.valueOf(yourObject.toString())

Source: Stackoverflow.com

Examples related to java

• Under what circumstances can I call findViewById with an Options Menu / Action Bar item? • How much should a function trust another function • How to implement a simple scenario the OO way • Two constructors • How do I get some variable from another class in Java? • this in equals method • How to split a string in two and store it in a field • How to do perspective fixing? • String index out of range: 4 • My eclipse won't open, i download the bundle pack it keeps saying error log

Examples related to casting

• Subtracting 1 day from a timestamp date • Cast object to interface in TypeScript • TypeScript enum to object array • Casting a number to a string in TypeScript • Hive cast string to date dd-MM-yyyy • Casting int to bool in C/C++ • Swift double to string • No function matches the given name and argument types • C convert floating point to int • PostgreSQL : cast string to date DD/MM/YYYY

Examples related to primitive

• Converting characters to integers in Java • What's the difference between primitive and reference types? • Java: Integer equals vs. == • How to cast Object to boolean? • Java equivalent of unsigned long long? • Primitive type 'short' - casting in Java • Generic type conversion FROM string