Use Boolean The valueof () method vs (or Java 1.5 autoboxing) creates a Boolean object

Boolean. Valueof() and Java 1.5 auto@R_750_2419 @A better approach between ing is to create Boolean values from Boolean values. Why?

Solution

Boolean auto boxing is transparently converted to Boolean by the compiler valueOf()：

boolean b = true;
Boolean bb = b;

Translated into:

iconst_1
istore_1            //b = 1 (true)
iload_1             //b
invokestatic    #2; //Method java/lang/Boolean.valueOf:(Z)Ljava/lang/Boolean;
astore_2            //bb = Boolean.valueOf(b)

Use whatever you think is more useful and readable Due to the use of Boolean Valueof () doesn't give you anything except extra input. You should aim at automatic packing

When you consider the opposite transformation, the situation becomes complicated - from Boolean to Boolean This time, the compiler will call Boolean. Net transparently Booleanvalue(), in theory, will lead to NullPointerException