当我们进行 concat 操作时，字符串会在 java 中创建 object 吗？

Question

I wrote the following;

String str1 = new String("railway"); // line 1
String str2 = str1.concat("station"); // line 2

When line 1 executes string will create objects in scp and heap.

What about the line 2 statement? In this case also it creates in scp and heap?

Thanks in advance

Answer 1

"railway" and "station" will be in Constant Pool.

str1 and str2 will be in heap.