Boolean.TRUE 和 true 性能对比

Boolean A(){ 
    return Boolean.TRUE;
}

boolean B(){
    return Boolean.TRUE
}

Boolean C(){
    return true;
}

boolean D(){
    return true;
}

 在性能和​​内存使用效率方面，A、D效率最高，C、D会更慢，因为需要装箱和拆箱。

 以下是测试结果：

 

Boolean isItTrue(){ 
    return Boolean.TRUE;
}

Free Memory before start --> 16030936
Time taken in Secs --> 7.844
Free Memory After Process --> 15940472
Memory Usage --> 90464

boolean isItTrue(){
    return Boolean.TRUE;
}

Free Memory before start --> 16030936
Time taken in Secs --> 10.109
Free Memory After Process --> 15940472
Memory Usage --> 90464

Boolean isItTrue(){
    return true;
}

Free Memory before start --> 16030936
Time taken in Secs --> 7.906
Free Memory After Process --> 15940472
Mem