java对象内存存储

如果此时向str发送一个消息，就会返回一个运行时错误，因为此时的str并没有与任何对象相关联。String str=“Hello World”;创建一个reference的时候，同时将它初始化。就是说，同时在堆heap里创建数据，与该reference相关联。如何使用数据...

java中使用内存存储数十万个对象的是否会影响系统性能问题？

请问java中使用内存存储数十万个对象的是否会影响系统性能问题？

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