Question

String w1;

String w2 = "apple";
String w3 = "banana";

What is stored in w1 by the following?

w1 = w3.substring(2);

Answer 1

After executing w1 = w3.substring(2), the variable w1 stores the substring "nana" extracted from the string "banana" starting at index 2.

Step-by-step explanation:

The Java code in question deals with string manipulation. The method substring is called on the string referenced by w3, which is "banana". The parameter (2) passed to the substring method indicates the starting index for the substring. In Java, indices start at 0, so w3.substring(2) produces the substring starting from the third character of "banana", which results in "nana" being stored in w1.

The given code snippet declares three string variables: w1, w2, and w3. The value 'apple' is assigned to w2, and the value 'banana' is assigned to w3.

The statement 'w3.substring(2)' retrieves a substring from w3 starting at index 2. In the word 'banana', index 2 corresponds to the letter 'n'.

Therefore, the value stored in w1 after the assignment 'w1 = w3.substring(2)' will be 'nana'.