Java String hashcode() Method
What is String?
In Java, A group of characters known as a string class are ones that a script interprets literally. A string is represented as a byte (or term) range information structure in order to preserve a number of components, frequently letters. The sequence may also designate additional types and arrangements of sequence (or array) data, such as more flexible arrays.
- Numerous methods, including compare(), concat(), equals(), split(), length(), replace(), compareTo(), intern(), and substring(), are available in the Java String class.
To know more about String Class in java read the complete article.
String IndexOf() Method:
Java String hashCode() method yields the string’s integer hash code value. This function of the Object class is overridden by the String class. A hash code for this Function is returned by the hashCode() method of the Method class. The hash code is calculated as the exclusive-or of the hashcodes for the method name and the class name declared in the underlying method.
- The java.lang.String class provides a lot of built-in methods that are used to manipulate string in Java.These methods help us to perform operations on String objects such as trimming, concatenating, converting, comparing, replacing strings etc.
If equals() is true for two strings, their hashCode() will be the same and If two strings hashCode() is equal, it doesn’t mean they are equal.
Syntax:
public int hashCode()
Parameters:
hashCode in class Object
Let’s look at a string-related Java program where the Java String hashcode() Method is used to perform an operation on the given string.
Example 1 : Return the hash code of a string
public class Main {
public static void main(String[] args) {
String myStr = "Hello PrepInsta";
System.out.println(myStr.hashCode());
}
}
Output
-1835279712
Example 2 : Return the hash code of a string
public class Main {
public static void main(String args[]) {
String Str = new String("Welcome to PrepInsta.com");
System.out.println("Hashcode for Str :" + Str.hashCode() );
}
}
Output
Hashcode for Str :-1566850982
Example 3: Return the hash code of a string.
public class Main {
public static void main(String args[]) {
String Str = new String("Welcome to PrepInsta prime");
System.out.println("Hashcode for Str :" + Str.hashCode() );
}
}
Output
Hashcode for Str :1401013862
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