为了验证boolean类型所占用的字节大小,我们可以编写一个简单的Java程序来进行验证。 publicclassBooleanSize{publicstaticvoidmain(String[]args){booleanvalue=true;System.out.println("Boolean size in bytes: "+sizeOf(value));}publicstaticintsizeOf(booleanvalue){// 使用Java的Unsafe类获取boolean类型的字节大小s...
再强调一遍,boolean 占用多少字节取决于虚拟机本身的实现,在 Windows 上 Sun's JDK build 1.6.0_11 的结果如下,这意味着 boolean 值(单独使用)的时候占用 1 个字节:SizeforLotsOfBooleans:87978576 Averagesize:87.978576 SizeforLotsOfInts:328000000 Averagesize:328. 心之所向,素履以往,我是小牛肉,小伙伴们...
class Last modified 2020-9-9; size 477 bytes MD5 checksum ae4d3635b02ccda5fe262ef944987b72 Compiled from "BooleanTest.java" public class com.dhb.test.BooleanTest minor version: 0 major version: 52 flags: ACC_PUBLIC, ACC_SUPER Constant pool: #1 = Methodref #3.#21 // java/lang/Object....
12(header) + 4(table reference) + 4(entrySet reference) + 4(size) + 4(modCount) + 4(threshold) + 8(loadFactor) + 4(keySet reference) + 4(values reference) = 48(bytes) 接着分析testMap实例在总共占用的内存大小。 根据上面对HashMap原理的介绍,可知每对键值对对应一个Node对象。根据上面的N...
Last modified 2020-9-9; size 477 bytes MD5 checksum ae4d3635b02ccda5fe262ef944987b72 Compiled from "BooleanTest.java" public class com.dhb.test.BooleanTest minor version: 0 major version: 52 flags: ACC_PUBLIC, ACC_SUPER Constant pool: ...
private static final int SIZE = 1000000; public static void main(String[] args) throws Exception { LotsOfBooleans[] first = new LotsOfBooleans[SIZE]; LotsOfInts[] second = new LotsOfInts[SIZE]; System.gc(); long startMem = getMemory(); ...
如果我们将对齐值更改为 32via-XX:ObjectAlignmentInBytes=32,则相同的类布局将更改为: 代码语言:javascript 代码运行次数:0 运行 AI代码解释 OFFSETSIZETYPEDESCRIPTIONVALUE012(object header)N/A121boolean BooleanWrapper.valueN/A1319(loss due to the next object alignment)Instance size:32bytes ...
布尔类型的大小通常为1字节,但这取决于具体的编译器和平台。你可以使用sizeof运算符来确定布尔类型的大小。 std::cout << "Size of bool: " << sizeof(bool) << " bytes" << std::endl; 2.2. 布尔类型的真值和假值 在C++中,true和false是布尔类型的字面量。但在实际应用中,任何非零值都被视为true...
如果我们将对齐值更改为 32via-XX:ObjectAlignmentInBytes=32,则相同的类布局将更改为: OFFSET SIZE TYPE DESCRIPTION VALUE 0 12 (object header) N/A 12 1 boolean BooleanWrapper.value N/A 13 19 (loss due to the next object alignment) Instance size: 32 bytes ...
The heap size, in bytes, excluding fragmentation. Examples The following example demonstrates how to use the GetTotalMemory method to get and display the number of bytes currently allocated in managed memory. C# Kopēt using System; namespace GCCollectIntExample { class MyGCCollectClass { private...