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Programming & Software Q&A | CollectiveSolver
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Welcome to collectivesolver - Programming & Software Q&A with code examples. A website with trusted programming answers. All programs are tested and work.
Contact: aviboots(AT)netvision.net.il
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Recent questions tagged java
40,023
questions
51,974
answers
573
users
Recent questions tagged java
1
answer
3
views
How to convert a number to any base in Java
asked
4 hours
ago
by
avibootz
java
java-convert-number-to-any-base
convert-number-to-any-base
1
answer
7
views
How to convert meters to yards and vice versa in Java
asked
17 hours
ago
by
avibootz
java
java-convert-meters-yards-vice-versa
convert-meters-yards-vice-versa
1
answer
20
views
How to count uppercase, lowercase, special characters, and numeric values using RegEx in Java
asked
1 day
ago
by
avibootz
java
java-count-uppercase-lowercase-special-characters-numeric-regex
count-uppercase-lowercase-special-characters-numeric-regex
1
answer
11
views
How to simulate rolling two dice (game cubes) with values 1–6 in Java
asked
2 days
ago
by
avibootz
java
java-simulate-rolling-two-dice-values-1-6
simulate-rolling-two-dice-values-1-6
1
answer
18
views
How to remove the last n occurrences of a substring in a string in Java
asked
5 days
ago
by
avibootz
java
java-remove-last-n-occurrences-substring-string
remove-last-n-occurrences-substring-string
1
answer
21
views
How to replace a random word in a string with a random word from a list of words using Java
asked
Feb 13
by
avibootz
java
java-replace-random-word-in-string-with-random-word-from-list
replace-random-word-in-string-with-random-word-from-list
1
answer
13
views
How to calculate the products of (jagged) uneven-sized matrix columns in Java
asked
Feb 13
by
avibootz
java
java-products-uneven-sized-matrix-columns
products-uneven-sized-matrix-columns
1
answer
23
views
How to find the shortest identical consecutive sublist in a list with Java
asked
Feb 8
by
avibootz
java
java-shortest-identical-consecutive-sublist
shortest-identical-consecutive-sublist
1
answer
24
views
How to find the shortest identical consecutive subvector in an vector with Java
asked
Feb 8
by
avibootz
java
java-shortest-identical-consecutive-subvector
shortest-identical-consecutive-subvector
1
answer
24
views
How to find the shortest identical consecutive subarray in an array with Java
asked
Feb 7
by
avibootz
java
java-shortest-identical-consecutive-subarray
shortest-identical-consecutive-subarray
1
answer
22
views
How to move the n word to the end of a string in Java
asked
Feb 6
by
avibootz
java
java-move-n-word-to-end-of-string
move-n-word-to-end-of-string
1
answer
20
views
How to move the first word to the end of a string in Java
asked
Feb 5
by
avibootz
java
java-move-first-word-to-end-of-string
move-first-word-to-end-of-string
1
answer
25
views
How to move a word to the end of a string in Java
asked
Feb 3
by
avibootz
java
java-move-word-to-end-of-string
move-word-to-end-of-string
1
answer
24
views
How to multiply every N consecutive items in a list with Java
asked
Feb 1
by
avibootz
java
java-multiply-every-n-of-consecutive-items-in-list
multiply-every-n-of-consecutive-items-in-list
1
answer
22
views
How to create a list of dates between a start and end date in Java
asked
Jan 31
by
avibootz
java
java-create-list-of-dates
create-list-of-dates
1
answer
25
views
How to sort a list of data classes by multiple columns in Java
asked
Jan 29
by
avibootz
java
java-sort-list-of-data-classes-by-multiple-columns
sort-list-of-data-classes-by-multiple-columns
1
answer
26
views
How to generate non‑overlapping random ranges (start,end),(start,end) in Java
asked
Jan 27
by
avibootz
java
java-generate-non-overlapping-random-ranges
generate-non-overlapping-random-ranges
1
answer
27
views
How to merge overlapping ranges (start,end),(start,end) in Java
asked
Jan 26
by
avibootz
java
java-merge-overlapping-ranges
merge-overlapping-ranges
1
answer
25
views
How to merge two strings based on shared suffix and prefix in Java
asked
Jan 23
by
avibootz
java
java-merge-two-strings
merge-two-strings-based-on-shared-suffix-and-prefix
1
answer
25
views
How to sort by strings a mixed pair of string and number elements in a list with Java
asked
Jan 22
by
avibootz
java
java-sort-list
sort-by-numbers-mixed-pair-of-string-number-elements-in-list
1
answer
30
views
How to sort by numbers a mixed pair of string and number elements in a list with Java
asked
Jan 22
by
avibootz
java
java-sort-list
sort-by-numbers-mixed-pair-of-string-number-elements-in-list
1
answer
23
views
How to turn a total number of seconds into years, months, days, minutes and seconds in Java
asked
Jan 21
by
avibootz
java
java-turn-total-number-of-seconds-into-years-months-days-minutes-seconds
turn-total-number-of-seconds-into-years-months-days-minutes-seconds
1
answer
23
views
How to check if a string is IPv4 or IPv6 or invalid in Java
asked
Jan 19
by
avibootz
java
java-check-if-string-is-ipv4-or-ipv6-or-invalid
check-if-string-is-ipv4-or-ipv6-or-invalid
1
answer
27
views
How to print a calendar for a specific month and year in Java
asked
Jan 18
by
avibootz
java
java-print-calendar-for-specific-month-and-year
print-calendar-for-specific-month-and-year
1
answer
31
views
How to print the calendar for a specific year in Java
asked
Jan 17
by
avibootz
java
java-print-calendar-for-specific-year
print-calendar-for-specific-year
1
answer
23
views
How to group words by first letter in Java
asked
Jan 16
by
avibootz
java
java-group-words-by-first-letter
group-words-by-first-letter
1
answer
30
views
How to find the volume of a capsule in Java
asked
Jan 12
by
avibootz
java
java-find-volume-of-capsule
find-volume-of-capsule
1
answer
26
views
How to implement ternary search to find a value in a sorted array with Java
asked
Jan 12
by
avibootz
java
java-implement-ternary-search-to-find-value-in-sorted-array
implement-ternary-search-to-find-value-in-sorted-array
1
answer
31
views
How to convert a character (flatten) matrix to a single string in Java
asked
Jan 10
by
avibootz
java
java-convert-character-matrix-to-single-string
convert-character-matrix-to-single-string
flatten_char_matrix
1
answer
30
views
How to convert a matrix of numbers to a string in Java
asked
Jan 9
by
avibootz
java
java-convert-matrix-numbers-to-string
convert-matrix-numbers-to-string
2
answers
36
views
How to find the max absolute difference between consecutive characters in a string with Java
asked
Jan 9
by
avibootz
java
java-max-absolute-difference-between-consecutive-characters-in-string
max-absolute-difference-between-consecutive-characters-in-string
3
answers
44
views
How to convert ArrayList to HashMap in Java
asked
Jan 8
by
avibootz
java
java-convert-arraylist-hashmap
convert-arraylist-hashmap
1
answer
32
views
How to hash a set of GUIDs in Java
asked
Jan 7
by
avibootz
java
java-hash-set-of-guids
hash-set-of-guids
1
answer
34
views
How to check if each letter in a string maps to the first letter of a word in another string with Java
asked
Jan 6
by
avibootz
java
java-each-letter-string-maps-first-letter-word-another-string
each-letter-string-maps-first-letter-word-another-string
1
answer
30
views
How to check if a string can be constructed by using the letters of another string in Java
asked
Jan 5
by
avibootz
java
java-string-constructed-letters-another-string
string-constructed-letters-another-string
1
answer
29
views
How to product of array except self (arr[i] is equal to the product of all the elements except arr[i]) in Java
asked
Jan 2
by
avibootz
java
java-product-array-except-self-arr_i
product-array-except-self-arr_i
2
answers
47
views
How to convert ArrayList to LinkedHashMap in Java
asked
Jan 2
by
avibootz
java
java-convert-arraylist-linkedhashmap
convert-arraylist-linkedhashmap
1
answer
41
views
How to clear bits in the given range in Java
asked
Dec 29, 2025
by
avibootz
java
java-clear-bits-given-range
clear-bits-given-range
1
answer
36
views
How to check if stack elements are pairwise consecutive in Java
asked
Dec 28, 2025
by
avibootz
java
java-check-stack-elements-pairwise-consecutive
check-stack-elements-pairwise-consecutive
1
answer
45
views
How to get the 4 least significant bits in a byte with Java
asked
Dec 28, 2025
by
avibootz
java
java-get-4-least-significant-bits-byte
get-4-least-significant-bits-byte
1
answer
37
views
How to check whether a user string contains any forbidden words from a list in Java
asked
Dec 26, 2025
by
avibootz
java
java-check-user-string-contains-forbidden-words
check-user-string-contains-forbidden-words
1
answer
43
views
How to check if the sum of two halves of a number is equal in Java
asked
Dec 22, 2025
by
avibootz
java
java-sum-two-halves-number-equal
sum-two-halves-number-equal
1
answer
32
views
How to check if two halves of a number are equal in Java
asked
Dec 21, 2025
by
avibootz
java
java-two-halves-number-equal
two-halves-number-equal
1
answer
53
views
How to check if two strings are isomorphic in Java
asked
Dec 19, 2025
by
avibootz
java
java-check-two-strings-isomorphic
check-two-strings-isomorphic
1
answer
59
views
How to remove text between parentheses in a string using Java
asked
Dec 17, 2025
by
avibootz
java
java-remove-text-between-parentheses-in-string
remove-text-between-parentheses-in-string
1
answer
43
views
How to find the missing number in an array containing numbers from 1 to n in O(1) time complexity with Java
asked
Dec 10, 2025
by
avibootz
java
java-missing-number-array-o1-time-complexity
missing-number-array-o1-time-complexity
1
answer
68
views
How to calculate the area of a triangle using Heron’s formula in Java
asked
Dec 9, 2025
by
avibootz
java
java-area-triangle-herons-formula
area-triangle-herons-formula
1
answer
49
views
How to convert Base64 to a JSON string in Java
asked
Dec 8, 2025
by
avibootz
java
java-base64-to-json-string
base64-to-json-string
1
answer
48
views
How to calculate time if we have the distance and speed (kilometers per hour) in Java
asked
Dec 5, 2025
by
avibootz
java
java-calculate-time-distance-speed
calculate-time-distance-speed
1
answer
50
views
How to write an equivalent to PHP implode(string $separator, array $array): string in Java
asked
Dec 5, 2025
by
avibootz
java
java-implode
php-implode-java
implode-function
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