Flash cards
Review the key moves
1/4
Core idea
What is the main idea behind Java String hashCode() Method?
Lesson checks
Practice each idea before moving on
Short Mimo-style checks built from this lesson's code, terms, and sequence.
1Quick choice
Which statement best captures the main point of this lesson?
2Fill blank
Complete the missing token from the example code.
___ myStr = "Hello";3Order
Put the learning moves in the order that makes the concept easiest to apply.
The hashCode() method returns the hash code of a string.
Definition and Usage
Java String hashCode() Method
❮ String Methods
Example
String myStr = "Hello";
System.out.println(myStr.hashCode());Definition and Usage
The hashCode() method returns the hash code of a string.
The hash code for a String object is computed like this:
s[0]*31^(n-1) + s[1]*31^(n-2) + ... + s[n-1]where s[i] is the ith character of the string, n is the length of the string, and ^ indicates exponentiation.
Syntax
public int hashCode()Parameter Values
None.
Technical Details
| Returns: | An int value, representing the hash code of the string |
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