Default Value Of Boolean In Java

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Default Value Of Boolean In Java

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Java Is A Boolean Instance Variable Default Value True Or False

In Java when a variable is declared but not initialized it is assigned a default value based on its data type The default values for the primitive data types in Java are as follows byte 0 short 0 int 0 long 0L float 0 0f double 0 0d char u0000 null character boolean false As @99tm answered, the default value is "false". This is correct for instance or class variables. If you have a method local variable (i.e. local to a method) as a primitive boolean, there is no default value and it is not an Object so it also cannot be null. You must initialize it before using it, otherwise it's a compilation error.

What Is The Default Value Of A Boolean In Java

Default Value Of Boolean In JavaJava Booleans Very often, in programming, you will need a data type that can only have one of two values, like: YES / NO ON / OFF TRUE / FALSE For this, Java has a boolean data type, which can store true or false values. Boolean Values A boolean type is declared with the boolean keyword and can only take the values true or false: For type boolean the default value is false So your two statements are functionally equivalent in a single threaded application Note however that boolean b false will lead to two write operations b will first be assigned its default value false then it will be assigned its initial value which happens to be false as well

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