Use the Boolean.valueOf () vs method (or standalone use of Java 1.5) to create logical objects

Question

What is the best practice between Boolean.valueOf() and Java 1.5 autoboxing to create a Boolean from booleans and why?

Answer 1

Autoboxing boolean transparently translated into Boolean.valueOf() compiler:

 boolean b = true; Boolean bb = b; 

translates to:

 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 what you find more useful and readable. Since using Boolean.valueOf() gives you nothing but extra text input, you should aim for autoboxing.

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The situation complicates when you think about the opposite transformation - from boolean to boolean . This time, Boolean.booleanValue() is called transparently by the compiler for you, which could theoretically NullPointerException .