What are the consequences of repeatedly creating a string object that occupies significant memory and already exists in memory?

In Java, strings are immutable objects. When creating a new string object with the same content that already exists in memory, the following consequences may occur:

• If the string is created through a literal (for example, String s = "example";), the JVM uses a string pool. In this case, a new string is not created; instead, an existing object is used, saving memory.

• If the string is created using the constructor new String("example"), a new object is created on the heap, even if an identical object already exists in the pool, leading to additional memory consumption.

• Frequent creation of new strings with the same content without using the pool can lead to increased memory usage and load on the garbage collector.

For optimization, it is recommended to use string literals or the intern() method, which places the string in the pool and returns a reference to an existing object if it exists:

String s1 = "example";
String s2 = new String("example").intern();
System.out.println(s1 == s2); // true

Thus, creating strings repeatedly without considering the pool can lead to excessive memory consumption.