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Let’s say we have the following string −String myStr1 = "Jack Sparrow";Let us check the string now whether it is not null or not empty.if(myStr != null || myStr.length() != 0) { System.out.println("String is not null or not empty");Example Live Demopublic class Demo { public static void main(String[] args) { String myStr = "Jack Sparrow"; boolean res; if(myStr != null || myStr.length() != 0) { System.out.println("String is not null or not empty"); } else { System.out.println("String is null or empty"); } } }OutputString is not null or not empty
In order to get the component type of an Array Object in Java, we use the getComponentType() method. The getComponentType() method returns the Class denoting the component type of an array. If the class is not an array class this method returns null.Declaration − The java.lang.Class.getComponentType() method is declared as follows -public Class getComponentType()Let us see a program to the get the component type of an Array Object in Java -Example Live Demopublic class Example { public static void main(String[] args) { int[] array = new int[] {1, 2, 3}; // obtain the Class ... Read More
The syntax for updating a column with random number between 1-3 is is as follows −update yourTableName set yourColumnName=FLOOR(1+RAND()*3);To understand the above syntax, let us first create a table. The query to create a table is as follows −mysql> create table UpdateNumber1To3 -> ( -> MyNumber int -> ); Query OK, 0 rows affected (0.61 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into UpdateNumber1To3 values(100); Query OK, 1 row affected (0.16 sec) mysql> insert into UpdateNumber1To3 values(140); Query OK, 1 row affected (0.25 sec) mysql> insert into UpdateNumber1To3 values(130); ... Read More
To implement animation on column-rule-width property with CSS, you can try to run the following codeExampleLive Demo div { width: 600px; height: 300px; background: white; border: 10px solid red; animation: myanim 3s infinite; bottom: 30px; position: absolute; column-rule: 10px inset orange; ... Read More
To implement animation on the column-rule property with CSS, you can try to run the following code:ExampleLive Demo div { width: 600px; height: 300px; background: white; border: 10px solid red; animation: myanim 3s infinite; bottom: 30px; position: absolute; column-count: 4; ... Read More
It is an algorithm to perform factorization on given integers. Following is the program implementing the Rho Algorithm for Prime Factorization.ProgramLive Demopublic class PollardsRho { int num = 65; public int gcd(int a, int b) { int gcd = 0; for(int i = 1; i
You can use in-built function CONCAT() from MySQL. The syntax is as follows −SELECT CONCAT(('(', yourColumnName1, ', ', yourColumnName2, ', ', yourColumnName3, ...N')')as anyVariableName from yourTableName;To understand the above syntax, let us first create a table. The query to create a table is as follows −mysql> create table Concatenation_OperatorDemo -> ( -> -> VendorId int, -> VendorName varchar(100), -> VendorCountry varchar(100) -> ); Query OK, 0 rows affected (0.69 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into Concatenation_OperatorDemo values(101, 'Carol', 'US'); Query OK, 1 row affected (0.19 sec) mysql> insert ... Read More
Use the border-top-left-radius property to set the border of the top left corner. You can try to run the following code to implement border-left-radius property:ExampleLive Demo #rcorner { border-radius: 25px; border-top-left-radius: 45px; background: #FADBD8; padding: 20px; width: 300px; height: 150px; } Rounded top-left corner!
To do a count on a union i.e. to get the count of the UNION result, use the below syntax −SELECT COUNT(*) FROM ( SELECT yourColumName1 from yourTableName1 UNION SELECT yourColumName1 from yourTableName2 ) anyVariableName;To understand the above syntax, let us create two tables with some records. The query to create a table is as follows −mysql> create table union_Table1 -> ( -> UserId int -> ); Query OK, 0 rows affected (0.47 sec)Insert some records in the table using insert command. The query is as follows −mysql> insert into union_Table1 values(1); Query OK, 1 row affected (0.18 sec) ... Read More
The parseFloat() function accepts two parameters one is a string representing a number and another is a number representing the radix and returns an integer of the given radix.SyntaxIts Syntax is as followsnum.parseFloat('4524', 8);Example Live Demo JavaScript Example var result1 = parseFloat(Math.PI); document.write("Result: "+result1); document.write(''); var result2 = parseFloat("245.12@welcome"); document.write("Result: "+result2); document.write(''); var result3 = parseFloat("11111100.010"); document.write("Result: "+result3); OutputResult: 3.141592653589793 Result: 245.12 Result: 11111100.01