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To obtain the natural log of a number, we use the java.lang.Math.log() method. The Math.log() method returns the natural logarithm i.e. log to the base e of a double value. If the value passed is NaN or negative, the result is NaN. If the value passed is positive infinity, then the value returned is positive infinity. When the parameter is positive zero or negative zero, then negative infinity is returned.Declaration - The java.lang.Math.log() method is declared as followspublic static double log(double a)where a is a value whose natural logarithm is to be found.Let us see a program to get the ... Read More
The zip_entry_filesize() function returns the file size before compression i.e. the actual file size is returned.Syntaxzip_entry_filesize(zip_entry)Parameterszip_entry − A zip file opened with zip_open() is to be mentioned here.ReturnThe zip_entry_filesize() function returns the file size before compression i.e. the actual file size is returned.Example
In order to get the power of a number in Java, we use the java.lang.Math.pow() method. The Math.pow(double a, double b) method accepts two arguments of the double data type and returns a value of the first parameter raised to the power of the second argument.Declaration - The java.lang.Math.pow() method is declared as follows −public static double pow(double a, double b)where a is the base and b is the power to which the base is raised.Let us see a program where we find the power of a number using Math.pow() methodExample Live Demoimport java.lang.Math; public class Example { public static ... Read More
In order to get the square root of a number in Java, we use the java.lang.Math.pow() method. The Math.pow(double a) method accepts one argument of the double data type and returns a value which is the square root of the argument.Declaration − The java.lang.Math.sqrt() method is declared as follows −public static double sqrt(double a)where a is the number whose square root is to be found.Let us see a program where we find the square root of number using the Math.sqrt() method.Example Live Demoimport java.lang.Math; public class Example { public static void main(String[] args) { // declaring and ... Read More
In order to round float and double numbers in Java, we use the java.lang.Math.round() method. The method accepts either double or float values and returns an integer value. It returns the closest integer to number. This is computed by adding ½ to the number and then flooring it.Declaration - The java.lang.Math.round() method is declared as follows −public static int round(float a) public static int round(double a)where a is the value to be rounded.Let us see a program where float and double numbers are rounded in Java.Example Live Demoimport java.lang.Math; public class Example { public static void main(String[] args) { ... Read More
In order to get the hyperbolic cosine of a given value in Java, we use the java.lang.Math.cosh() method. The cosh() method accepts an argument in radians and returns the hyperbolic cosine of the argument which acts as the angle.Declaration − - The java.lang.Math.cosh() is declared as follows −public static double cosh(double x)where x is the angle in radians.Let us see a program to get the hyperbolic cosine of a given value in Java.Example Live Demoimport java.lang.Math; public class Example { public static void main(String[] args) { // get two double numbers in degrees double ... Read More
You can get the enum possible values in a MySQL database with the help of INFORMATION_SCHEMA.COLUMNS table. The syntax is as follows −SELECT COLUMN_TYPE AS anyAliasName FROM INFORMATION_SCHEMA.COLUMNS WHERE TABLE_SCHEMA = ‘yourDatabaseName’ AND TABLE_NAME = 'yourTableName' AND COLUMN_NAME = 'yourEnumColumnName';To understand the above syntax, let us create a table with an ENUM data type. The query to create a table is as follows −mysql> create table EnumDemo -> ( -> Id int, -> Color ENUM('RED', 'GREEN', 'BLUE', 'BLACK', 'ORANGE') -> ); Query OK, 0 rows affected (0.66 sec)Here the table ‘EnumDemo’ is present in the ‘sample’ database. ... Read More
In order to get the hyperbolic sine of a given value in Java, we use the java.lang.Math.sinh() method. The sinh() method accepts an argument in radians and returns the hyperbolic sine of the argument which acts as the angle.Declaration − The java.lang.Math.sinh() is declared as follows −public static double sinh(double x)where x is the angle in radians.Let us see a program to get the hyperbolic sine of a given value in Java.Example Live Demoimport java.lang.Math; public class Example { public static void main(String[] args) { // get two double numbers in degrees double x ... Read More
The zip_entry_name() function returns the name of the zip archive file.Syntaxzip_entry_name(zip_entry)Parameterszip_entry − A zip file opened with zip_open() is to be mentioned here.ReturnThe zip_entry_name() function returns the name of the zip archive file.The following is an example. Let’s say we have 5 files in the zip archive "new.zip".ExampleOutputFile Name = amit.txt File Name = peter.txt File Name = result.html File Name = demo.java File Name = settings.ini
To get the base 10 logarithm of value in Java, we use the java.lang.Math.log10() method. This method returns the log of value to the base 10 in the form of a double. If a number is 10n, then the result is n. If the value passed is NaN or negative, the result is NaN. If the value passed is positive infinity, then the value returned is positive infinity. When the parameter is positive zero or negative zero, then negative infinity is returned.Declaration −The java.lang.Math.log10() method is declared as follows −public static double log10(double a)where a is a value whose base ... Read More