* The maximum size of array to allocate. * Some VMs reserve some header words in an array. * Attempts to allocate larger arrays may result in * OutOfMemoryError: Requested array size exceeds VM limit */privatestaticfinalintMAX_ARRAY_SIZE=Integer.MAX_VALUE-8; 这里说 Some VMs reserve some ...
但是在编译器中定义运行,报错说OutOfMemoryError即内存不够。 因为JVM 需要为数组的元数据(描述数组属性-长度等)预留空间。 *//** * The maximum size of array to allocate. * Some VMs reserve some header words in an array. * Attempts to allocate larger arrays may result in * OutOfMemoryError: ...
In this tutorial, we’ll look at the maximum size of an array in Java. 2. Max Size A Java program can only allocate an array up to a certain size. It generally depends on the JVM that we’re using and the platform. Since the index of the array isint, theapproximate index value c...
Integer.MAX_VALUE:MAX_ARRAY_SIZE;}原文地址：java - Why the maximum array size of ArrayList is ...
/*** The maximum size of array to allocate (unless necessary).* Some VMs reserve some header ...
Arraylist的MAX_ARRAY_SIZE = Integer.MAX_VALUE - 8; 最近在学习java的基础知识,学到集合的时候,在查看ArrayList的源码的时候,发现了一个有趣的东西。 ArrayList集合的最大长度是多少? /** * The maximum size of array to allocate. * Some VMs reserve some header words in an array. ...
需要调用 System.arraycopy() 将 index+1 后面的元素都复制到 index 位置上,该操作的时间复杂度为 O(N),可以看到 ArrayList 删除元素的代价是非常高的。 代码语言:java AI代码解释 publicEremove(intindex){rangeCheck(index);modCount++;EoldValue=elementData(index);intnumMoved=size-index-1;if(numMoved>...
max(i, 127); // Maximum array size is Integer.MAX_VALUE h = Math.min(i, Integer.MAX_VALUE - (-low) -1); } catch( NumberFormatException nfe) { // If the property cannot be parsed into an int, ignore it. } } high = h; cache = new Integer[(high - low) + 1]; int j =...
GCTimeLimit = 98uintx GCTimeRatio = 12size_t HeapBaseMinAddress = 2147483648bool HeapDumpAfterFullGC = falsebool HeapDumpBeforeFullGC = falseintx HeapDumpGzipLevel = 0bool HeapDumpOnOutOfMemoryError = falseccstr HeapDumpPath =uintx HeapFirstMaximumCompactionCount = 3uintx HeapMaximumCompaction...
maximumPoolSize 线程池最大线程数,队列满时,线程最大并发数 1. keepAliveTime 空闲线程的最大存活时间,系统默认只回收非核心线程,核心线程可以通过 设置threadPoolExecutor.allowCoreThreadTimeOut(true);来运行核心 线程的销毁。 1. 2. 3. TimeUnit