In Java, all gadgets are dynamically allotted on Heap. This isn't like C++ wherein gadgets may be allotted reminiscence both on Stack or on Heap. In C++, whilst we allocate the item to the use of new(), the item is allotted on Heap, in any other case on Stack if now no longer worldwide or static. In Java, whilst we handiest claim a variable of a category type, handiest a reference is created (reminiscence isn't allotted for the item). To allocate reminiscence to an item, we should use new(). So the item is continually allotted reminiscence on the heap (See this for greater details). For example, the following software fails withinside the compilation. The compiler offers error “Error right here due to the fact t isn't initialized”.

class Test {

// class contents
void show()
{
	System.out.println("Test::show() called");
}
}

public class Main {

		// Driver Code
	public static void main(String[] args)
	{
		Test t;
		
		// Error here because t
		// is not initialzed
		t.show();
	}
}

Allocating to memory using new() makes the above program work.

class Test {
	
// class contents
void show()
{
	System.out.println("Test::show() called");
}
}

public class Main {
	
	// Driver Code
	public static void main(String[] args)
	{
		
		// all objects are dynamically
		// allocated
		Test t = new Test();
		t.show(); // No error
	}
}