Java对象原理的相关内容

[帮助文档] 如何使用Java堆分析对象查询语言OQL

1. OQL语法OQL语法如下：SELECT * FROM [ INSTANCEOF ] [ WHERE ]2. 语法各子句说明select部分SELECT toString(x), x.value, x....

String s = new String("java"); 只创建了一个对象！好好看好好学，要了解原理！

public static void main(String[] args) { String str1 = new StringBuilder("计算机").append("软件").toString(); System.out.println(str1.intern() == str1); St...

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[帮助文档] 管道任务同步读取源表时报错java.sql.SQLExceptionORA-08103

问题描述Dataphin管道任务同步读取源表时，报错“java.sql.SQLException: ORA-08103: 对象不再存在”;源表是存在的。问题原因管道任务同步读取源表时，另一个用户在全量更新该源表，即有一个进程truncate，insert动作，而同时有另一进程对同一表做select动...

Java对象的序列化/反序列化原理及源码解析（下）

Other1. static和transient字段不能被序列化。序列化的时候所有的数据都是来自于ObejctStreamClass对象，在生成ObjectStreamClass的构造函数中会调用fields = getSerialFields(cl);这句代码来获取需要被序列化的字段，getSer...

Java对象的序列化/反序列化原理及源码解析（中）

writeNonProxy()方法中会按照以下几个过程来写入数据:调用writeUTF()方法写入对象所属类的名字，对于本例中name = com.sss.test.对于writeUTF()这个方法，在写入实际的数据之前会先写入name的字节数，代码如下:void writeUTF(String s...

Java对象的序列化/反序列化原理及源码解析（上）

https://github.com/Wasabi1234/Java-Interview-Tutorial1 什么是序列化、反序列化Java序列化是指把Java对象保存为二进制字节码的过程，Java反序列化是指把二进制码重新转换成Java对象的过程。2 为什么需要序列化？2.1 使用场景2.1.1 ...

请问在java中重用对象是否能够真正的提升java应用程序的性能呢，原理是什么？

Java对象序列化底层原理源码解析

What Java序列化是指把Java对象保存为二进制字节码的过程，Java反序列化是指把二进制码重新转换成Java对象的过程。那么为什么需要序列化呢？第一种情况是：一般情况下Java对象的声明周期都比Java虚拟机的要短，实际应用中我们希望在JVM停止运行之后能够持久化指定的对象，这时候就需要...

java list中的对象去重原理

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