What will happen If I initialize a Class object which is already initialized in JAVA?

Question

I want to know what will happen if I initialize an already initialized Class object in Java. Does the garbage collector destroys the object and free the memory?.

Example code:

........
Object target = new MyClass();//First intialization
........
target = new MyClass();//Re-intialization //I want to know what will happen here
........

Answer 1

Object target = new MyClass();

This will create a new object of MyClass() and target variable will refer to this object.

After the second statement:

target = new MyClass();

Another new Object will be created and target will now refer to this newly created object. The previous object will have no reference and GC will free that memory.

Answer 2

MyClass 的第一个对象将不再在线程上处于活动状态，垃圾收集器会在堆上需要更多内存时激活并释放空间，这是 Java 虚拟机使用的一大块内存。