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You can add values to the hash table and remove values from the hash tables. To add the values to the hash table, you need to use the below format.$hash[""] = ""We have hash table already created here, $htable = [Ordered]@{EmpName="Charlie";City="New York";EmpID="001"}PS C:\WINDOWS\system32> $htable Name Value ---- ----- EmpName Charlie City New York EmpID 001We need to add additional key “Dept” in the above hash table with the value “Technical”.$htable['Dept']="Technical"When you check the output of the above Hashtable, you can see the key-value is appended to the table.PS ... Read More
To process array elements, we often use either for loop or for each loop because all of the elements in an array are of the same type and the size of the array is known. Suppose we have an array of 5 elements we can print all the elements of this array as −ExampleLive Demopublic class ProcessingArrays { public static void main(String args[]) { int myArray[] = {22, 23, 25, 27, 30}; for(int i=0; i
transient: An instance variable is marked transient to indicate the JVM to skip the particular variable when serializing the object containing it. This modifier is included in the statement that creates the variable, preceding the class or data type of the variable.Examplepublic transient int limit = 55; // will not persist public int b; // will persistvolatile: The volatile modifier is used to let the JVM know that a thread accessing the variable must always merge its own private copy of the variable with the master copy in the memory.Accessing a volatile variable synchronizes all the cached copied ... Read More
You can try this method to convert time to date and hour format −select to_varchar(time, 'YYYY-MM-DD'), hour(time), sum(r_time) as r_time, sum(p_time) as p_time from t1 group by date(time), hour(time) order by to_varchar(time, 'YYYY-MM-DD'), hour(time);You can also try using Series_Round() with a group by clause.select SERIES_ROUND(time, 'INTERVAL 1 HOUR') as time, sum(r_time) as r_time, sum(p_time) as p_time from t1 group by SERIES_ROUND(time, 'INTERVAL 1 HOUR') order by SERIES_ROUND(time, 'INTERVAL 1 HOUR');
There are several ways to create a Hash Table in PowerShell. We will discuss here the standard method @{} for creating the Hash Table.Using @{} MethodYou can use @{} method to create a hash table. Key-Value pair is separated with the Semi-Colon (;). You can only add unique keys. Duplicate keys are not accepted.$htable = @{EmpName="Charlie";City="New York";EmpID="001"}OutputName Value ---- ----- EmpID 001 City New York EmpName CharlieHere, you will not get the output in an ordered fashion. To get the ordered output, you need to write [Ordered] ahead ... Read More
Hash table in a PowerShell is constructed with the Key-Value combination. Each key has its own value, so to get the value we need to refer the Key. We don’t need numeric indexing like Array to refer values.This is how the hash table looks like.Name Value ---- ----- EmpName Charlie City New York EmpID 001In the hash table creation, keys and values are separated with Semi-colons (;). In the above example, EmpName, City and EmpID are referred as keys while Charlie, New York ... Read More
The replace method of the String class accepts two characters and it replaces all the occurrences of oldChar in this string with newChar.Exampleimport java.io.*; public class Test { public static void main(String args[]) { String Str = new String("Welcome to Tutorialspoint.com"); System.out.print("Return Value :" ); System.out.println(Str.replace('o', 'T')); System.out.print("Return Value :" ); System.out.println(Str.replace('l', 'D')); } }OutputReturn Value :WelcTme tT TutTrialspTint.cTm Return Value :WeDcome to TutoriaDspoint.comThe replaceAll() method replaces each substring of this string that matches the given regular expression with the given replacement.Exampleimport java.io.*; ... Read More
An important feature introduced in Java 9 is Module. By using a module, we can divide the code into smaller components called modules. It means each module has its own responsibility and declare its dependency on other modules to work correctly.Below are the steps to create a modular project in Java 9:Initially, we can create a file named "module-info.java" and add to a package(module) for which it is created. For instance, if our package name is com.mycompany.mypackage then the file goes to the same package (src/com.mycompany.mypackage/module-info.java). We can create a module by declaring "exports" and "requires" expressions.If our modules require another module ... Read More
One way to do it to convert both strings to lower or upper case using toLowerCase() or toUpperCase() methods and test.ExampleLive Demopublic class Sample { public static void main(String args[]){ String str = "Hello how are you welcome to Tutorialspoint"; String test = "tutorialspoint"; Boolean bool = str.toLowerCase().contains(test.toLowerCase()); System.out.println(bool); } }Outputtrue
The java.lang.String.contains() method returns true if and only if this string contains the specified sequence of char values.ExampleLive Demopublic class Sample { public static void main(String args[]){ String str = "Hello how are you welcome to tutorialspoint"; String test = "tutorialspoint"; Boolean bool = str.contains(test); System.out.println(bool); } }Outputtrue