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Fetch and remove the first element in Queue using the poll() method.Create a queue −Queue q = new LinkedList();Add some elements −q.add("abc"); q.add("def"); q.add("ghi"); q.add("jkl"); q.add("mno"); q.add("pqr"); q.add("stu"); q.add("vwx");Now, remove the first element −q.poll()The following is an example to implement the poll() method −Example Live Demoimport java.util.LinkedList; import java.util.Queue; public class Demo { public static void main(String[] args) { Queue q = new LinkedList(); q.add("abc"); q.add("def"); q.add("ghi"); q.add("jkl"); q.add("mno"); q.add("pqr"); q.add("stu"); q.add("vwx"); ... Read More
To create a Sorted Set, firstly create a Set −Set s = new HashSet();Add elements to the above set −int a[] = {77, 23, 4, 66, 99, 112, 45, 56, 39, 89}; Set s = new HashSet(); try { for(int i = 0; i < 5; i++) { s.add(a[i]); }After that, use TreeSet class to sort −TreeSet sorted = new TreeSet(s);Get the last element, using the last() method −System.out.println("Last element of the sorted set = "+ (Integer)sorted.last());The following is the code to get the last element from a Sorted Set in Java −Example Live Demoimport java.util.*; public class Demo ... Read More
The Date object is a data type built into the JavaScript language. Date objects are created with the new Date( ) as shown below.Once a Date object is created, a number of methods allow you to operate on it. Most methods simply allow you to get and set the year, month, day, hour, minute, second, and millisecond fields of the object, using either local time or UTC (universal, or GMT) time.The now() function of the Date object returns the number of milliseconds since 1st Jan 1970.SyntaxIts syntax is as followsDate.now();Example Live Demo JavaScript Example ... Read More
The isEmpty() method is used in Java to check whether a NavigableMap is empty or not.First, create a NavigableMap and add elements to it −NavigableMap n = new TreeMap(); n.put(5, "Tom"); n.put(9, "John"); n.put(14, "Jamie"); n.put(1, "Tim"); n.put(4, "Jackie"); n.put(15, "Kurt"); n.put(19, "Tiger"); n.put(24, "Jacob");Now, check whether the Map is empty or not −System.out.println("Map is empty? " + n.isEmpty());The following is an example to implement isEmpty() method and check whether the Map is empty −Example Live Demoimport java.util.*; public class Demo { public static void main(String[] args) { NavigableMap n = new TreeMap(); n.put(5, ... Read More
The method java.util.Stack.empty() is used to check if a stack is empty or not. This method requires no parameters. It returns true if the stack is empty and false if the stack is not empty.A program that demonstrates this is given as follows −Example Live Demoimport java.util.Stack; public class Demo { public static void main (String args[]) { Stack stack = new Stack(); stack.push("Amy"); stack.push("John"); stack.push("Mary"); System.out.println("The stack elements are: " + stack); System.out.println("The stack is empty? " + stack.empty()); ... Read More
To wrap the flex items, use the flex-wrap property. You can try to run the following code to implement the flex-wrap propertyExampleLive Demo .mycontainer { display: flex; background-color: #D7BDE2; flex-wrap: wrap; } .mycontainer > div { background-color: white; text-align: center; line-height: 40px; font-size: 25px; width: 100px; margin: 5px; } Quiz Q1 Q2 Q3 Q4 Q5 Q6 Q7 Q8 Q9
The getInt32() function of the DataView gets and returns a signed 32-bit integer at the specified position.SyntaxIts syntax is as followsdataView.getInt32();Example Live Demo JavaScript Example var arrayBuffer = new ArrayBuffer(20); var dataView = new DataView(arrayBuffer); dataView.setInt32(1, 36274722); document.write(dataView.getInt32(1)); Output36274722ExampleTo this function you cannot pass float value, if you try to do so it is considered as integer value. Live Demo JavaScript Example var arrayBuffer = new ArrayBuffer(20); var dataView ... Read More
The getInt8() function of the DataView gets and returns a signed 8-bit floating point number at the specified position.SyntaxIts syntax is as followsdataView.getInt8();Example Live Demo JavaScript Example var arrayBuffer = new ArrayBuffer(20); var dataView = new DataView(arrayBuffer); dataView.setInt8(1, 362); document.write(dataView.getInt8(1)); Output106ExampleTo this function you cannot pass float value, if you try to do so it is considered as integer value. Live Demo JavaScript Example var arrayBuffer = new ArrayBuffer(20); ... Read More
The getUint16() function of the DataView gets and returns an unsigned 16-bit integer at the specified position.SyntaxIts syntax is as followsdataView.getUint16();Example Live Demo JavaScript Example var arrayBuffer = new ArrayBuffer(20); var dataView = new DataView(arrayBuffer); dataView.setUint16(1, 45544); document.write(dataView.getUint16(1)); Output45544ExampleTo this function you cannot pass float value, if you try to do so it is considered as integer value. Live Demo JavaScript Example var arrayBuffer = new ArrayBuffer(20); var dataView ... Read More
Use the containsValue() method to check for the existence of a value. First, create a IdentityHashMap −Map m = new IdentityHashMap();Add some elements −m.put("1", 100); m.put("2", 200); m.put("3", 300); m.put("4", 150); m.put("5", 110); m.put("6", 50); m.put("7", 90); m.put("8", 250); m.put("9", 350); m.put("10", 450);Now check for the existence of a value −m.containsValue(100))The following is an example to implement containsValue() method −Example Live Demoimport java.util.*; public class Demo { public static void main(String[] args) { Map m = new IdentityHashMap(); m.put("1", 100); m.put("2", 200); m.put("3", 300); m.put("4", ... Read More