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The zip_entry_open() function is used to open a zip archive entry for reading.Syntaxzip_entry_open(zip_file,zip_entry,mode)Parameterszip_file − The zip file to be readzip_entry − The zip entry to open.mode − The type of access needed for zip archiveReturnThe zip_entry_open() function Returns TRUE on success, or FALSE on failure.Example
To check whether a String contains only unicode letters or digits in Java, we use the isLetterOrDigit() method and charAt() method with decision-making statements.The isLetterOrDigit(char ch) method determines whether the specific character (Unicode ch) is either a letter or a digit. It returns a boolean value, either true or false.Declaration −The java.lang.Character.isLetter() method is declared as follows −public static boolean isLetter(char ch)The charAt() method returns a character value at a given index. It belongs to the String class in Java. The index must be between 0 to length()-1.Declaration −The java.lang.String.charAt() method is declared as follows −public char charAt(int index)Let us ... Read More
The zip_open() function opens a zip file for reading. It returns an open zip file on success and FALSE on failure.Syntaxzip_open(zip_file)Parameterszip_file − The path of the file to be opened.ReturnThe zip_open() function returns an open zip file on success and FALSE on failure.ExampleOutputCompressed: 90 Compressed: 12 Compressed: 67
In order to check if a String has only Unicode letters in Java, we use the isDigit() and charAt() methods with decision-making statements.The isLetter(int codePoint) method determines whether the specific character (Unicode codePoint) is a letter. It returns a boolean value, either true or false.Declaration −The java.lang.Character.isLetter() method is declared as follows −public static boolean isLetter(int codePoint)Here, the parameter codePoint represents the character to be checked.The charAt() method returns a character value at a given index. It belongs to the String class in Java. The index must be between 0 to length()-1.Declaration −The java.lang.String.charAt() method is declared as follows −public ... Read More
To lag a column in MySQL, first, let us create a table. The query to create a table is as follows −mysql> create table LagDemo -> ( -> UserId int, -> UserValue int -> ); Query OK, 0 rows affected (1.74 sec)ExampleInsert some records in the table using insert command. The query is as follows −mysql> insert into LagDemo values(12, 158); Query OK, 1 row affected (0.61 sec) mysql> insert into LagDemo values(18, 756); Query OK, 1 row affected (0.21 sec) mysql> insert into LagDemo values(15, 346); Query OK, 1 row affected (0.25 sec) mysql> insert ... Read More
In order to get the hyperbolic tangent of a given value in Java, we use the java.lang.Math.tanh() method. The tanh() method accepts an argument in radians and returns the hyperbolic tan of the argument which acts as the angle.Declaration −The java.lang.Math.tanh() is declared as follows −public static double tanh(double x)where, x is the angle in radians.Let us see a program to get the hyperbolic tangent 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
Supplements are obtained from a wide variety of food items and the more diverse your eating routine, the more nutrients you gain. The supplements found in all beverages and food give nutrients to the body. This is in the form ofSubstances which give energyBuilding blocks for bone, muscle, organs, hormones, and bloodSubstances required for the process to happen in the body (like circulation)Substances that protect the bodyEnergyEnergy is not a supplement but vital for doing our day to day chores.Protein, fats, and starches are transformed into energy in various quantities. Vitamins and minerals are also fundamental supplements for the body, ... Read More
The zip_close() function is used to close the zip file archive. The zip is opened by the zip_open() function.Syntaxzip_close(zip_file)Parameterszip_file − A zip file opened with zip_open() is to be mentioned here. This is the file we want to close.ReturnThe zip_close() function returns nothing.ExampleOutputFile will be closed now
The zip_entry_close() function is used to close a zip archive opened by the zip_entry_open() function.Syntaxzip_entry_close(zip_entry)Parameterszip_entry − The zip entry resource. Required.ReturnThe zip_entry_close() function Returns TRUE on success and FALSE on failure.The following is an example. Let’s say we have "new.zip" file as our archive.Example
The zip_entry_compressed_size() function returns the compressed file size of a zip archive entry.Syntaxzip_entry_compressed_size(zip_entry)Parameterszip_entry − The zip entry resource. Required.ReturnThe zip_entry_compressed_size() function returns the compressed file size of a zip archive entry.The following is an example that gets the size of the files in "new.zip" archive.ExampleOutputCompressed: 90 Compressed: 12 Compressed: 67