Copyright (c) 2003, 2005, Oracle and/or its affiliates. All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions
are met:
- Redistributions of source code must retain the above copyright
notice, this list of conditions and the following disclaimer.
- Redistributions in binary form must reproduce the above copyright
notice, this list of conditions and the following disclaimer in the
documentation and/or other materials provided with the distribution.
- Neither the name of Oracle nor the names of its
contributors may be used to endorse or promote products derived
from this software without specific prior written permission.
THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS
IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO,
THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR
PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR
CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL,
EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO,
PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR
PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF
LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING
NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
Header for -agentlib:hprof (or -Xrunhprof) ASCII Output (JDK 5.0 JVMTI based)
WARNING! This file format is under development, and is subject to
change without notice.
This file contains the following types of records:
THREAD START
THREAD END mark the lifetime of Java threads
TRACE represents a Java stack trace. Each trace consists
of a series of stack frames. Other records refer to
TRACEs to identify (1) where object allocations have
taken place, (2) the frames in which GC roots were
found, and (3) frequently executed methods.
HEAP DUMP is a complete snapshot of all live objects in the Java
heap. Following distinctions are made:
ROOT root set as determined by GC
CLS classes
OBJ instances
ARR arrays
SITES is a sorted list of allocation sites. This identifies
the most heavily allocated object types, and the TRACE
at which those allocations occurred.
CPU SAMPLES is a statistical profile of program execution. The VM
periodically samples all running threads, and assigns
a quantum to active TRACEs in those threads. Entries
in this record are TRACEs ranked by the percentage of
total quanta they consumed; top-ranked TRACEs are
typically hot spots in the program.
CPU TIME is a profile of program execution obtained by measuring
the time spent in individual methods (excluding the time
spent in callees), as well as by counting the number of
times each method is called. Entries in this record are
TRACEs ranked by the percentage of total CPU time. The
"count" field indicates the number of times each TRACE
is invoked.
MONITOR TIME is a profile of monitor contention obtained by measuring
the time spent by a thread waiting to enter a monitor.
Entries in this record are TRACEs ranked by the percentage
of total monitor contention time and a brief description
of the monitor. The "count" field indicates the number of
times the monitor was contended at that TRACE.
MONITOR DUMP is a complete snapshot of all the monitors and threads in
the System.
HEAP DUMP, SITES, CPU SAMPLES|TIME and MONITOR DUMP|TIME records are generated
at program exit. They can also be obtained during program execution by typing
Ctrl-\ (on Solaris) or by typing Ctrl-Break (on Win32).
jdk-8u381-linux-x64
5星 · 超过95%的资源 需积分: 0 133 浏览量
更新于2023-07-21
收藏 132.82MB GZ 举报
Java Development Kit(JDK)是Java编程语言的核心组件,它为开发者提供了编译、调试和运行Java应用程序所需的所有工具。"jdk-8u381-linux-x64" 是Oracle公司发布的针对Linux操作系统的64位版本的JDK 8更新381。这个版本包含了对Java 8的重要更新和安全修复,对于在Linux环境下开发和运行Java应用的用户来说至关重要。
Java 8是Java历史上的一个重要里程碑,引入了许多创新特性,旨在提高开发效率和程序性能。其中最引人注目的变化之一是Lambda表达式,它使得编写简洁的多线程代码成为可能,通过函数式接口和方法引用,可以更轻松地处理集合数据。此外,Java 8还引入了Stream API,这是一种用于处理集合的新方式,支持并行处理,有助于提高数据处理性能。
在"jdk1.8.0_381"这个压缩包中,我们可以期待找到以下关键组件:
1. `bin`目录:包含可执行文件,如`java`, `javac`, `jar`等,这些都是Java开发和运行环境的基础工具。
2. `include`目录:提供了C/C++头文件,用于开发与Java Native Interface (JNI) 相关的本地方法。
3. `jre`目录:包含了运行Java应用程序所需的Java Runtime Environment。
4. `lib`目录:存储各种库文件,包括类库和其他运行时需要的资源。
5. `man`目录:包含了与JDK相关的帮助文档。
6. `legal`目录:包含了Oracle的许可证和版权信息。
安装JDK 8u381在Linux上通常涉及解压文件到适当位置,然后设置环境变量,例如`JAVA_HOME`、`PATH`和`CLASSPATH`。这些环境变量的配置使得系统能够正确识别和使用Java命令。在某些Linux发行版中,可以使用包管理器(如apt-get或yum)来自动安装和管理JDK。
使用JDK 8u381进行开发时,开发者可以利用Java 8的新特性,比如Optional类,它可以帮助避免空指针异常;方法引用和构造器引用,可以简化代码;以及Date/Time API的改进,提供更好的日期和时间处理功能。
在维护和升级方面,定期更新到最新版本的JDK是非常重要的,因为这不仅可以获取新的特性和性能优化,还能确保系统免受已知安全漏洞的威胁。"jdk-8u381-linux-x64"就是这样一个维护更新,它为Linux开发者提供了一个可靠的Java运行时环境,保障了应用的稳定性和安全性。
行路难且将行
- 粉丝: 65
- 资源: 2
最新资源
- ccceeeeee,ukytkyk/liyihm
- 100kW微型燃气轮机Simulink建模,微燃机包括压缩机模块、容积模块、回热器模块、燃烧室模块、膨胀机模块、转子模块以及控制单元模块 考虑微燃机变工况特性下的流量、压缩绝热效率、膨胀绝热效率、压
- 该模型采用龙贝格观测器进行无传感器控制 其利用 PMSM 数学模型构造观测器模型,根据输出的偏差反馈信号来修正状态变量 当观测的电流实现与实际电流跟随时, 可以从观测的反电势计算得到电机的转子位置信
- 双移线驾驶员模型,多项式双移线模拟 软件使用:Matlab Simulink 适用场景:采用多项式搭建双移线期望路径,基于郭孔辉单点预瞄理论,搭建双移线simulink驾驶员模型 模型包含:双移线
- 0cd39e46e9672ca3fc70d6cb46f099dd_1734832088456_8
- 伺服系统永磁同步电机矢量控制调速系统在线转动惯量辨识Matlab仿真 1.模型简介 模型为永磁同步电机伺服控制仿真,采用Matlab R2018a Simulink搭建 模型内主要包含使
- newEditor.css
- 读QFLASH ID和读4线FLASH数据vitis验证工程
- 欧拉系统(openEuler-22.03-LTS-SP3) suricata rpm安装包
- ADRC自抗扰控制永磁同步电机矢量控制调速系统Matlab仿真模型 1.模型简介 模型为基于自抗扰控制(ADRC)的永磁同步电机矢量控制仿真,采用Matlab R2018a Simulink搭
- ADRC线性自抗扰控制感应电机矢量控制调速Matlab Simulink仿真 1.模型简介 模型为基于线性自抗扰控制(LADRC)的感应(异步)电机矢量控制仿真,采用Matlab R2018a
- 感应电机矢量控制调速仿真PI参数自整定 Matlab Simulink仿真模型 1.模型简介 模型为感应(异步)电机矢量控制调速系统仿真,采用Matlab R2018a Simulink搭建
- CC2530无线zigbee裸机代码实现ADC采集内部温度并串口打印.zip
- CC2530无线zigbee裸机代码实现LED流水灯程序.zip
- CC2530无线zigbee裸机代码实现MQ-2气体传感器数值读取.zip
- CC2530无线zigbee裸机代码实现PWM调光控制.zip