How to get all the possible K length Substrings in a String in Java - Step by Step Examples

How to get all the possible K length Substrings in a String in Java ?

Answer

To get all the possible K-length substrings in a string in Java, you can use a loop to extract substrings of the desired length.

✐ Examples

1 Get All K-length Substrings (K=3) from a String

In this example,

We create a string named str with a value.
We define an integer k to represent the length of the substrings we want to extract, which is 3 in this example.
We create a loop that starts from index 0 and runs until str.length() - k, ensuring that we don't go out of bounds.
Inside the loop, we use the substring method to extract a substring starting at the current index and of length 3.
We print each extracted substring to the standard output.

Java Program

public class Main {
    public static void main(String[] args) {
        String str = "HelloWorld";
        int k = 3;
        for (int i = 0; i <= str.length() - k; i++) {
            String substring = str.substring(i, i + k);
            System.out.println("Substring: " + substring);
        }
    }
}

Output

Substring: Hel
Substring: ell
Substring: llo
Substring: loW
Substring: oWo
Substring: Wor
Substring: orl
Substring: rld

2 Get All K-length Substrings (K=4) from a String

In this example,

We create a string named text with a value.
We define an integer k to represent the length of the substrings we want to extract, which is 4 in this example.
We create a loop that starts from index 0 and runs until text.length() - k, ensuring that we don't go out of bounds.
Inside the loop, we use the substring method to extract a substring starting at the current index and of length 4.
We print each extracted substring to the standard output.

Java Program

public class Main {
    public static void main(String[] args) {
        String text = "abcdefgh";
        int k = 4;
        for (int i = 0; i <= text.length() - k; i++) {
            String substring = text.substring(i, i + k);
            System.out.println("Substring: " + substring);
        }
    }
}

Output

Substring: abcd
Substring: bcde
Substring: cdef
Substring: defg
Substring: efgh

Summary

In this tutorial, we learned How to get all the possible K length Substrings in a String in Java language with well detailed examples.

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How to get all the possible K length Substrings in a String in Java - Step by Step Examples

How to get all the possible K length Substrings in a String in Java ?

Answer

✐ Examples

1 Get All K-length Substrings (K=3) from a String

Java Program

Output

2 Get All K-length Substrings (K=4) from a String

Java Program

Output

Summary

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