What is the expected output of the following Java code snippet? ```java String str = "example"; System.out.println(str.substring(3, str.length() - 1)); ```
Understand the Problem
The question asks for the output of a Java code snippet using the substring method. The substring method extracts a portion of a string, given a starting index (inclusive) and an ending index (exclusive). In this case, the starting index is 3 and the ending index is str.length() - 1 where str is "example".
Answer
amp
The code will print "amp".
The substring method extracts a part of the string. In this case, it starts at index 3 and goes up to (but does not include) index 6 (length of "example" - 1). Therefore, it extracts characters at indices 3, 4, and 5, which are "a", "m", and "p" respectively.
Answer for screen readers
The code will print "amp".
The substring method extracts a part of the string. In this case, it starts at index 3 and goes up to (but does not include) index 6 (length of "example" - 1). Therefore, it extracts characters at indices 3, 4, and 5, which are "a", "m", and "p" respectively.
More Information
The substring() method in Java is used to extract a portion of a string, creating a new string. It's important to remember that string indices in Java are zero-based.
Tips
A common mistake is to forget that the second argument of the substring() method is exclusive, meaning the character at that index is not included in the resulting substring.
Sources
- Master Java Substring Method: Examples, Syntax, and Use Cases - digitalocean.com
- Java Strings - W3Schools - w3schools.com
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