Programming TIPS!

A site on Java API Examples and TIPS.

Java TIPS

Basics of Record class (March 25, 2023) Update!
Use System.nanoTime to measure elapsed time (March 24, 2023)
Get the current time (March 18, 2023)
Basics of Date and Time (March 18, 2023)
Don't use the legacy Date and Calendar classes, use new APIs instead (March 18, 2023)
Don't use the legacy File class, use new I/O APIs instead (March 4, 2023)
Simple Builder Design Pattern (February 8, 2023)
Use TimeUnit.sleep instead of Thread.sleep (January 22, 2023)
An exhaustive list of format strings (December 28, 2022)
Delete a directory with contents (October 30, 2022)
How to Use the Simple Web Server (jwebserver) (September 10, 2022)

Index

A
- AbstractCollection (June 2, 2022)
- AbstractList (June 4, 2022)
- AbstractMap (June 15, 2022)
- AbstractSequentialList (June 13, 2022)
- AbstractSet (June 17, 2022)
- AccessibleObject (September 18, 2022)
- Adler32 (November 13, 2022)
- AnnotatedElement (September 15, 2022)
- Appendable (April 22, 2022)
- ArithmeticException (February 10, 2023)
- ArrayDeque (July 4, 2022)
- ArrayList (June 17, 2022)
- Arrays (August 28, 2022)
- Attr (XML) (March 25, 2023)
- AutoCloseable (March 11, 2023)
B
- Base64 (January 3, 2023)
- Base64.Decoder (January 3, 2023)
- Base64.Encoder (January 3, 2023)
- BaseStream (March 18, 2023)
- BiConsumer (August 21, 2022)
- BiFunction (August 30, 2022)
- BigDecimal (April 24, 2022)
- BigInteger (April 24, 2022)
- BiPredicate (September 1, 2022)
- Boolean (July 10, 2022)
- BufferedInputStream (October 18, 2022)
- BufferedOutputStream (October 21, 2022)
- BufferedReader (March 11, 2023)
- BufferedWriter (March 18, 2023)
- Byte (July 12, 2022)
- ByteArrayInputStream (April 24, 2022)
- ByteArrayOutputStream (October 1, 2022)
C
- Callable (March 18, 2023)
- Character (July 22, 2022)
- CharacterData (XML) (March 25, 2023)
- CharSequence (December 19, 2022)
- Charset (January 5, 2023)
- Checksum (November 9, 2022)
- ChoiceFormat (November 25, 2022)
- Class (September 13, 2022)
- ClassCastException (March 1, 2023)
- Cleaner (August 27, 2022)
- Cloneable (May 1, 2022)
- CloneNotSupportedException (March 23, 2023)
- Closeable (April 29, 2022)
- Collection (January 1, 2023)
- Collections (March 11, 2023)
- Collectors (August 23, 2022)
- Comment (XML) (March 25, 2023)
- CompactNumberFormat (November 27, 2022)
- Comparable (January 7, 2023)
- Comparator (January 26, 2023)
- ConsoleHandler (logging) (January 11, 2023)
- Constructor (reflection) (September 25, 2022)
- Consumer (March 18, 2023)
- CountDownLatch (October 12, 2022)
- CRC32 (November 9, 2022)
- CRC32C (November 15, 2022)
- Currency (December 1, 2022)
D
- DataInput (November 1, 2022)
- DataInputStream (October 23, 2022)
- DataOutput (October 26, 2022)
- DataOutputStream (October 28, 2022)
- DateTimeException (March 13, 2023)
- DateTimeParseException (March 16, 2023)
- DayOfWeek (December 29, 2022)
- DecimalFormat (November 30, 2022)
- Deflater (ZIP) (February 14, 2023)
- DeflaterInputStream (ZIP) (January 18, 2023)
- DeflaterOutputStream (ZIP) (January 13, 2023)
- Deque (June 11, 2022)
- DirectoryNotEmptyException (December 27, 2022)
- Document (XML) (May 23, 2022)
- DocumentBuilder (XML) (May 14, 2022)
- DocumentBuilderFactory (XML) (March 25, 2023)
- DOMImplementation (XML) (May 18, 2022)
- DOMImplementationLS (XML) (May 20, 2022)
- Double (July 17, 2022)
- DoubleStream (December 29, 2022)
- Driver (JDBC) (December 30, 2022)
- Duration (November 30, 2022)
E
- Element (XML) (March 25, 2023)
- Entity (XML) (May 28, 2022)
- EntityReference (XML) (May 26, 2022)
- Enum (November 30, 2022)
- Error (September 5, 2022)
- Exception (March 18, 2023)
- Executable (September 22, 2022)
- Executor (March 18, 2023)
- Executors (March 18, 2023)
- ExecutorService (March 18, 2023)
F
- Field (reflection) (September 20, 2022)
- FileAlreadyExistsException (December 24, 2022)
- FileHandler (logging) (January 11, 2023)
- Files (March 4, 2023)
- FileStore (Storage) (December 8, 2022)
- FileSystemException (December 20, 2022)
- FileVisitor (November 3, 2022)
- FilterInputStream (October 11, 2022)
- FilterOutputStream (October 14, 2022)
- Float (July 19, 2022)
- Format (November 21, 2022)
- Formatter (logging) (March 18, 2022)
- Formatter (String Syntax) (December 6, 2022)
- Function (March 18, 2023)
- Future (March 25, 2023)
- FutureTask (March 25, 2023)
G
- GZIPInputStream (ZIP) (January 31, 2023)
- GZIPOutputStream (ZIP) (January 24, 2023)
H
- Handler (logging) (January 8, 2023)
- HashMap (June 21, 2022)
- HashSet (June 23, 2022)
- HexFormat (September 29, 2022)
- HttpClient (September 11, 2022)
- HttpClient.Version (July 8, 2022)
- HttpHeaders (August 4, 2022)
- HttpRequest (September 10, 2022)
- HttpRequest.BodyPublishers (August 10, 2022)
- HttpRequest.Builder (August 8, 2022)
- HttpResponse (September 10, 2022)

I
- IllegalArgumentException (March 18, 2023)
- IllegalStateException (March 18, 2023)
- IndexOutOfBoundsException (August 6, 2022)
- Inflater (ZIP) (February 16, 2023)
- InflaterInputStream (ZIP) (January 20, 2023)
- InflaterOutputStream (ZIP) (January 13, 2023)
- InputStream (March 11, 2023)
- InputStreamReader (October 7, 2022)
- Instant (March 18, 2023)
- Integer (March 11, 2023)
- InterruptedException (March 25, 2023)
- IntStream (March 25, 2023) Update!
- IOException (May 5, 2022)
- Iterable (March 11, 2023)
- Iterator (March 11, 2023)
J
- JShell (September 16, 2022)
L
- Level (logging) (January 8, 2023)
- LinkedHashMap (June 26, 2022)
- LinkedHashSet (June 28, 2022)
- LinkedList (June 19, 2022)
- List (March 4, 2023)
- LocalDate (March 11, 2023)
- LocalDateTime (March 11, 2023)
- Locale (November 21, 2022)
- LocalTime (March 11, 2023)
- Logger (logging) (January 8, 2023)
- LogManager (logging) (April 24, 2022)
- Long (July 17, 2022)
- LSSerializer (XML) (May 22, 2022)
M
- Map (March 4, 2023)
- Matcher (regex) (May 30, 2022)
- MatchResult (regex) (May 31, 2022)
- Math (December 16, 2022)
- MathContext (March 28, 2022)
- Member (September 10, 2022)
- Method (reflection) (September 27, 2022)
- Month (January 3, 2023)
N
- Node (XML) (March 25, 2023)
- Normalizer (December 3, 2022)
- NoSuchFileException (December 22, 2022)
- NullPointerException (August 2, 2022)
- Number (January 19, 2023)
- NumberFormat (November 27, 2022)
O
- Object (May 2, 2022)
- Objects (March 4, 2023)
- OffsetDateTime (April 2, 2022)
- OffsetTime (January 3, 2023)
- Optional (March 11, 2023)
- OutOfMemoryError (September 3, 2022)
- OutputStream (March 11, 2023)
- OutputStreamWriter (October 9, 2022)
P
- Path (March 4, 2023)
- Pattern (regex) (May 30, 2022)
- Period (November 30, 2022)
- PhantomReference (August 25, 2022)
- Predicate (March 18, 2023)
- PrintStream (October 18, 2022)
- PrintWriter (October 15, 2022)
- Process (March 26, 2023) Update!
- ProcessBuilder (March 3, 2023)
- ProcessBuilder.Redirect (March 9, 2023)
- ProcessHandle (March 26, 2023) Update!
Q
- Queue (June 8, 2022)
R
- Random (April 24, 2022)
- RandomGenerator (April 24, 2022)
- Readable (March 11, 2023)
- Reader (March 26, 2023) Update!
- Reference (August 13, 2022)
- RoundingMode (April 24, 2022)
- Runnable (March 18, 2023)
- Runtime (February 24, 2023)
- RuntimeException (March 18, 2023)
S
- Scanner (November 11, 2022)
- Serializable (December 14, 2022)
- Set (March 4, 2023)
- Short (July 15, 2022)
- SimpleFileVisitor (November 5, 2022)
- SimpleFormatter (logging) (April 24, 2022)
- SoftReference (August 15, 2022)
- Spliterator (October 24, 2022)
- StackWalker (September 18, 2022)
- StandardCharsets (January 9, 2023)
- StandardCopyOption (File) (December 10, 2022)
- Stream (March 18, 2023)
- Stream.Builder (July 24, 2022)
- StreamHandler (logging) (January 11, 2023)
- StreamTokenizer (January 27, 2023)
- StrictMath (December 16, 2022)
- String (March 4, 2023)
- StringBuffer (March 18, 2023)
- StringBuilder (March 11, 2023)
- StringJoiner (July 6, 2022)
- StringReader (October 3, 2022)
- StringWriter (October 5, 2022)
- Supplier (March 18, 2023)
- System (October 26, 2022)
T
- TemporalAdjusters (January 3, 2023)
- Text (XML) (March 25, 2023)
- Thread (March 18, 2023)
- Throwable (March 18, 2023)
- TimeUnit (August 17, 2022)
- Transformer (XML) (May 15, 2022)
- TransformerFactory (XML) (May 7, 2022)
- TreeMap (June 30, 2022)
- TreeSet (July 2, 2022)
U
- UnsupportedOperationException (April 27, 2022)
- URI (March 4, 2023)
- URL (March 11, 2023)
- UUID (April 14, 2022)
W
- WeakHashMap (August 13, 2022)
- WeakReference (August 14, 2022)
- Writer (March 11, 2023)
X
- XMLFormatter (logging) (April 24, 2022)
Y
- Year (November 30, 2022)
Z
- ZipEntry (February 20, 2023)
- ZipFile (February 22, 2023)
- ZipInputStream (February 7, 2023)
- ZipOutputStream (February 2, 2023)
- ZonedDateTime (March 18, 2023)
- ZoneId (March 11, 2023)
- ZoneOffset (March 11, 2023)

Programming TIPS!

Java TIPS

Category

Base

Checksum

Collection

Database(JDBC)

Design

Exception

File

Functional Interface

Internationalization

IO

Logging

Network

Number

Process

Random

Reference

Reflection

Regex

Stream

String

Thread

Time

Tool

Utility

XML

ZIP

Index