Java Guidance

How to filter strings via length using stream in java In this Java code snippet, a list of strings named `words` is created, containing “apple,” “banana,” “cherry,” and “date.” Utilizing Java 8 streams, a new list called `longWords` is generated by filtering the `words` list. The `filter` operation selects only those strings from the original…

Calculate factorial using stream in java ? In this Java code snippet, an integer variable `n` is set to 5. Using Java 8 streams, the code calculates the factorial of `n`. It does this by generating a range of integers from 1 to `n` (inclusive), and then reducing them using a multiplication operation. The `reduce`…

Stream : Summing Values in a Map In this Java code snippet, a `Map` called `scores` is created to store name-score pairs. Two entries are added for “Alice” with a score of 90 and “Bob” with a score of 85. The subsequent lines utilize Java 8 streams to extract the values (scores) from the `scores`…

Stream : Group names by Length In this Java code snippet, we’re grouping these strings by their lengths. The `groupingBy` collector organizes the strings into a map where the keys represent the lengths, and the values are lists of strings with the same length. The code snippet efficiently creates the `groupedByLength` map, which groups the…

Stream: Finding Average Length In this Java code snippet, we’re working with a list of strings: “apple,” “banana,” and “cherry.” Using streams, we transform each string into its corresponding length and convert it to an integer. Then, we calculate the average of these lengths. If the list is empty, the `orElse` function sets the average…

Summing Even Indices using Streams Here we’re performing a series of operations on a list of integers. The `numbers` list contains 10, 20, 30, 40, and 50. Using streams, we start by filtering the indices that are even. Then, we map these indices to their corresponding values in the `numbers` list. Finally, we calculate the sum…

Combining Strings with Delimiter using stream We’re merging a list of strings into a single string using streams. The `words` list contains “Hello,” “world,” and “Java.” By applying the `joining` collector with a space delimiter, the elements are combined into the string `combined`, resulting in “Hello world Java.” Streams. make this process efficient and concise….

Demystifying the Java Code: Filtering Prime Numbers with Streams Have you ever encountered a piece of Java code that left you scratching your head? Fear not, for today we’re going to unravel the intricacies of a seemingly complex code snippet that filters prime numbers using Java streams. Whether you’re a seasoned programmer or just starting…