BlockingQueueremove() method in Java, example
BlockingQueue remove() method in Java, examples Original text: https://www . geesforgeks . org/blockingqueue-remove-method-in-Java-with-examples/ BlockingQueue‘s Remove(object object) method only removes an instance of the given object (as argument passed, if it exists). This method returns true if this queue contains one or more instances of element e if this queue contains the element now removed from the blocking queue. Syntax: public boolean remove(Object o) Parameters:This method accepts A mandatory parameter Object which is the element to be removed from the blocking queue. Return value: This method returns true if the queue contains an element that is now removed from the blocking queue. If the blocking queue does not contain an element Object, this method returns False. Note: The remove() method of blocking Queue inherits the Queue in Java kind. The following program illustrates the removal method of the blocking queue class: Program 1: // Java Program Demonstrate remove(Object obj)// method of BlockingQueueimport java.util.concurrent.LinkedBlockingQueue;import java.util.concurrent.BlockingQueue;public class GFG { public static void main(String[] args) throws InterruptedException { // define capacity of BlockingQueue int capacityOfQueue = 4; // create object of BlockingQueue BlockingQueue<String> BQ = new LinkedBlockingQueue<String>(capacityOfQueue); // Add element using put() method BQ.put(” Karan”); BQ.put(“Suraj”); BQ.put(“Harsh”); BQ .put(“Rahul”); // print elements of queue System.out.println(“Items in Queue are ” + BQ); // try to remove Karan from…
Short reversedbyte() in Java, example
Short reverse bytes () in Java, examples Original text: https://www . geesforgeks . org/short-reverse bytes-in-Java-with-examples/ The reverseBytes() method of the Short class is a built-in method in Java that returns the byte order in the two’s complement representation of the specified short value by reversing it And the value obtained. Syntax: public static short reverseBytes(*short a* ) Parameters:This method takes a short type parameter a , its bytes will be reversed. Return Value: This method returns the value obtained by reversing the bytes in the specified short value. Example: Input: 75Output: 1258291200Explanation:Consider an short a = 75 Binary Representation = 1001011Number of one bit = 4 After reversing the bytes = 1258291200Input: -43Output: -704643073 The following program illustrates the Short.reverseBytes() method: Program 1: is a positive number. // Java program to illustrate the// Short .reverseBytes() methodimport java.lang.* ;public class Geeks { public static void main(String[ ] args) { // Create a Short instance short a = 61; // Print the value before reversal of Bytes System.out.println(” Original value = ” + a); // Reverse the bytes in the specified short value // Using reverseBytes() method System.out. println(“After reversing the bytes : \n” + “New value : ” “n”>Short.reverseBytes(a)); }} Output: Original value = 61 After reversing the bytes…
WeekFieldsweekOfWeekBasedYear() method in Java, example
WeekFields weekOfWeekBasedYear() method in Java, examples Original text: https://www . geesforgeks . org/weekfields-weekofweekbasedier-method-in-Java-with-examples/ WeekFields class‘s weekofweekbase dyer() method is used to return a field to access the week of the year based on this WeekFields. Example: If the first day of the year is Monday, then the first week starts on the first day If The second day of the year is a Monday, then the first week starts on the second day, and the first week is the last week of the previous year If the fourth day of the year is a Monday 1, then the first week starts on the fourth day, and the first to third days are the last week of the previous year If the fifth day of the year is Monday, then the first Week two starts on the 5th, with weeks one through four being week one This field can be used with any calendar system. Syntax: public TemporalField weekOfWeekBasedYear() Parameters: This method accepts nothing. Return Value: This method returns a field that provides access to the week-based year instead of a null value. The following program illustrates the WeekFields.weekOfWeekBasedYear() method:Program 1: // Java program to demonstrate// WeekFields.weekOfWeekBasedYear() methodimport java.time.DayOfWeek;import java.time.LocalDate;import java.time.temporal.TemporalField;import…
Matcher region(int, int) method in Java, example
Matcher region (int, int) method in Java, example Original text: https://www.geesforgeks.org/matcher-regionint-int-method-in-Java-with -examples/ The matcher class‘s region(int, int) method restricts the region to be pattern matched. The area must be less than or equal to, but not greater than, the previous area. Otherwise an IndexOutOfBoundsException will result. This method returns a matcher with a new matching region. Syntax: public Matcher region(int startIndex, int endIndex ) Parameters:This method takes two parameters: startindex serves as the starting index of the new constraint region. End index is the end index of the new constraint region. Return value:This method returns a matcher, the region to be matched, and the comparison. Exception:If: startIndex position Ali endIndex (end index) is Ajun, StartIndex or endIndex is greater than the length of the input sequence. startIndex position yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo yo 哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟哟endIndex(结束索引)，吴经熊和吴经熊对束缚 Indexation of Sexual Perceptions. The following example illustrates the Matcher.region() method: Example 1: // Java code to illustrate region() methodimport java.util.regex.*;public class GFG { public static void main(String[] args ) { // Get the regex to be checked String…
AtomicIntegeraccumulateAndGet() method in Java, example
AtomicInteger accumulateAndGet() method in Java, examples Original text: https://www . geeksforgeeks . org/atomicinteger-accumulatedget-method-in-Java-with-examples/ Java. The atomicinteger .accumulateedget()method is a built-in method that updates the current value of an object by applying a specified operation to the current value and the value passed as argument. It takes an integer as argument, an object of the IntBinaryOperator interface as argument, and applies the operation specified in the object to the values. It returns the updated value. Syntax: public final int accumulateAndGet(int y, IntBinaryOperator function) Parameters: strong>This method accepts an integer value y and an integer arithmetic function function as parameters. It applies the given function to the current value of the object and the value y. Return value:The function returns the updated value of the current object. Give examples to illustrate functionality. Java language (a computer language, especially used for creating websites) // Java program to demonstrate// AtomicInteger accumulateAndGet() methodimport java.util.concurrent.atomic.AtomicInteger;import java.util.function.IntBinaryOperator;public class Demo { public static void main(String[] args) { new UserThread (“Thread A”); new UserThread(“Thread B “); }}class Shared { static AtomicInteger ai = new AtomicInteger(0 );}class UserThread implements Runnable { String name; UserThread(String name) { this.name = name ; new Thread(this).start(); } IntBinaryOperator ibo = (x, y) -> (x + y) ; int value = 5; @Override public void run() { for…
Japanese chronology isLeapYear() method in Java, example
Japanese chronology isLeapYear() method in Java, example Original text: https://www . geeksforgeeks . org/Japanese chronology-islapyear-method-in-Java-with- example/ The IsLapyear() method of Java . time . chrono . Japanese Chronology class is used to distinguish leap years and non-leap years. If it is a leap year, it will return true or false. Syntax: public boolean isLeapYear(long prolepticYear) Parameters:This method starts with Puri Year is a parameter to check whether it is a leap year. Return Value: If the previous year was a leap year, this method returns a Boolean value that is true, otherwise it is false. The following are examples illustrating themethod: Example 1: // Java program to demonstrate// isLeapYear() methodimport java.util.*;import java.io.*;import java.time.*;import java.time.chrono.*;public class GFG { public static void main(String[] argv) { // creating and initializing // JapaneseDate Object JapaneseDate hidate = JapaneseDate.now(); // getting JapaneseChronology // used in JapaneseDate “>hidate.getChronology(); // getting id of this Chronology // by using isLeapYear() method boolean flag = crono.isLeapYear(1444 ); // display…
Mapequals() method in Java, example
Map equals() method in Java, examples Original text: https://www . geesforgeks . org/map-equals-method-in-Java-with-examples/ The java.util.Map.equals() method in java is used to check the equality between two maps. It verifies that an element of a map passed as a parameter is equal to an element of this map. Syntax: boolean equals(object obj) Parameters:This method accepts a parameter object, and references the map whose equality is to be checked against. Return value:If the two object mappings are equal, the method returns true, otherwise it returns false. The following program illustrates the java.util.Map.equals() method:Program 1: // Java code to illustrate the equals() methodimport java.util.*;public class Map_Demo { public static void main(String[] args) { // Creating an empty Map Map<Integer, String> map1 = new HashMap<Integer, String>(); Map<Integer, String> map2 = new HashMap<Integer, String>(); // Mapping string values to int keys map1 .put(10, “Geeks”); map1.put(15, “4”); map1.put(20, “Geeks” ); map1.put(25, “Welcomes”); map1.put(30 , “You”); // Mapping string values to int keys map2.put(10, “Geeks”); map2.put(15, “4”); map2.put(20, “Geeks”); map2.put( 25, “Welcomes”); map2.put(30, “You”); 20, “Geeks”); map1.put(25, “Welcomes”); map1.put(30, “You”); // Mapping string values to int keys for map2 map2.put(10, “Geeks” ); map2.put(15, “4”); map2.put(20, “Geek”); map2 .put(25, “Welcomes”); map2.put(30 , “You”); // Displaying the map 1 System.out.println(“First Map: ” + map1) ; // Displaying the map 2 System .out.println(“Second Map: ” + map2 ); // Displaying the equality System .out.println(“Equality: ” + map1.equals(map2)); }} Output:…
Correct way to close input and output streams in Java, example
The correct way to close the input stream and output stream in Java, example Original text: https://www . geeksforgeeks . org/The correct way to close the input stream and output stream in java -Example/ Because IO requires you to deal with streams, channels, and file descriptors that need to be closed properly, they are difficult for Java developers to deal with. Because of this, many Java programmers never bother to do the cleanup work, and it’s really easy to be lazy and just do the work and ignore anything else. This habit is even more obvious for programmers who have never done systems programming in C or C++. To release the file descriptor this class holds as its limited resource and use it for socket connections and file processing, it is necessary to close the stream. Severe resource leaks can also cause file descriptor exceptions. Let’s look at a code that copies a file from one directory to another in Java without using any third-party library. Java T0T6] Most of the code is correct, even better than many Java programmers. But it has a bug that can cause resource leaks in Java programs. If the close() method of the input…
TimeUnittoMicros() method in Java, example
TimeUnit toMicros() method in Java, examples Original text: https://www . geesforgeks . org/time unit-tomi cros-method-in-Java-with-examples/ The ToiCross() method of the time unit class is used to obtain the coordinates of UTC since midnight on January 1, 1970. The time represented by the time unit object, in microseconds. Syntax: public long toMicros(long duration) Parameters:This method accepts A mandatory parameter Duration, which is the duration in milliseconds. Return value:This method returns the converted duration in microseconds. The following program illustrates the implementation of the TimeUnit toMicros() method: Program 1: Java language (a Computer language, especially used for creating websites) // Java program to demonstrate // toMicros() method of TimeUnit Classimport java.util.concurrent .*;import java.util.Date;class GFG { public static void main(String args[]) { // Get current time in milliseconds long timeInMilliSec = new Date().getTime(); // Create a TimeUnit object TimeUnit time = TimeUnit.MILLISECONDS; // Convert milliseconds to MicroSeconds // using toMicros() method System.out.println(“Time ” + timeInMilliSec “>+ time.toMicros(timeInMilliSec)); }} Output: Time 1539585538596 milliSeconds in MicroSeconds = 1539585538596000 Program 2: Java language (a computer language, especially used for creating websites) // Java program to demonstrate// toMicros() method of TimeUnit Classimport java.util.concurrent.* ;import java.util.Calendar;class GFG { public static void main(String args[]) { // Get current time in milliseconds long timeInMilliSec = Calendar nMillis(); // Create a TimeUnit object TimeUnit time =…
Immediate scope() method in Java, example
Instant range() method in Java, examples Original text: https://www . geesforgeks . org/instant-range-method-in-Java-with-examples/ The Range() method of the instant class helps in getting the range of valid values passed as a parameter for the field. This method returns a ValueRange object that contains the minimum and maximum valid values of the field. This split second helps improve the accuracy of the return range. An exception is thrown when the field is not supported and the method cannot return a range value. Syntax: public ValueRange range(TemporalField field) Parameters:This method accepts A parameter field, which is the field to obtain the value range. Returns: This method returns a value range, which is the range of valid values for this field and is not empty. Exception:If the range of the field cannot be obtained, this method will throw the following exception: [ Abnormal date and time: If this field is not supported, it is not supported. The following program illustrates the range() method: Program 1: // Java program to demonstrate// Instant.range() methodimport java.time.*;import java.time.temporal.ChronoField;import java.time.temporal.ValueRange;public class GFG { public static void main( String[] args) { // create a Instant object Instant instant = Instant.parse(“2018-10- 28T19:34:50.63Z”); // print Instant System.out.println(“Instant: ” “>+ instant); // get range of MILLI_OF_SECOND field // from instant using…
