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Articles on Trending Technologies
Technical articles with clear explanations and examples
Checking existing password policy of SAP HANA system
You can check this information under New User in SAP HANA. The below snapshot shows the New User dialog in SAP HANA Studio and the password rule that is displayed when hovering over the password field.
Read MoreSetting password expire notification in SAP HANA
Parameter password_expire_warning_timeDefault Value 14 (days)Parameter definitionNotification is transmitted via the database client (ODBC or JDBC) and it is up to the client application to provide this information to the user.If you enter the value 0, the user does not receive notification that his or her password is due to expire.The system also monitors when user passwords are due to expire and issues a medium priority alert. This may be useful for technical database users since password expiration results in the user being locked, which may affect application availability. It is recommended that you disable the password lifetime check of technical ...
Read MoreUsing database view in SAP HANA
A view in a database is defined as Virtual table which derives its data from one or more columns of one table or multiple tables. A view can be created using tables of one or more database and is stored in database where it is created.You can find views in SAP HANA Studio under schema name −
Read MoreHow can I change the default sort order of MySQL tables?
As we know that when we use ORDER BY Clause, the default sort order of MySQL table is ascending, start with the smallest value. We can change this default order by using DESC keyword along with ORDER BY Clause. The following example will clarify this concept −>mysql> Select * from STUDENT ORDER BY Name DESC; +--------+--------+--------+ | Name | RollNo | Grade | +--------+--------+--------+ | Gaurav | 100 | B.tech | | Aryan | 165 | M.tech | | Aarav | 150 | M.SC | +--------+--------+--------+ 3 rows in set (0.00 sec)We can see that after using the keyword DESC the default order has been changed from ascending to descending.
Read MoreHow can we create an unmodifiable List in Java 9?
A list considered to be unmodifiable if the elements can't be added, removed, or replaced from a list once an unmodifiable instance of a list has created. The static factory method: List.of() provides a convenient way to create unmodifiable lists in Java 9.An instance of a list created by using the List.of() method has the following characteristics.The list returned by a factory method is conventionally immutable. It means that the elements can't be added, removed, or replaced from a list. Calling any mutator method on the List causes UnsupportedOperationException.If the contained elements of List are mutable, it may cause the ...
Read MoreImportance of iterate() method of Stream API in Java 9?
In Java 8, the iterate() method of Stream API takes the seed and the unary operator as arguments. As stream becomes infinite, it makes the developer add explicit termination conditions by using limit, findFirst, findAny and etc. In Java 9, the iterate() method of Stream API has added a new argument, a predicate that takes the condition to break the flow.Syntaxstatic Stream iterate(T seed, Predicate
Read MoreWhat does the method removeRange(int fromIndex, int toIndex) do in java?
The removeRange() method of the ArrayList class removes all of the elements from this List whose index is between fromIndex and toIndex.Exampleimport java.util.*; public class ArrayListDemo extends ArrayList{ public static void main(String[] args) { ArrayListDemo arrlist = new ArrayListDemo(); arrlist.add(10); arrlist.add(12); arrlist.add(31); System.out.println("The list:" + arrlist); arrlist.removeRange(0,2); System.out.println("The list after using removeRange:" + arrlist); } }OutputThe list:[10, 12, 31] The list after using removeRange:[31]
Read MoreWhat does the method set(int, obj o) do in java?
The set() method of the ArrayList class replaces the element at the specified position in this list with the specified element.Exampleimport java.util.ArrayList; public class Sample { public static void main(String args[]) { ArrayList al = new ArrayList(); System.out.println("Initial size of al: " + al.size()); al.add("C"); al.add("A"); al.add("E"); al.add(1, "A2"); System.out.println("Size of al after additions: " + al.size()); System.out.println("Contents of al: " + al); System.out.println("Size of al after deletions: " + al.size()); ...
Read MoreWhat does the method indexOf(obj o) do in java?
The indexOf(Object) method of the java.util.ArrayList class returns the index of the first occurrence of the specified element in this list, or -1 if this list does not contain the element.Exampleimport java.util.ArrayList; public class ArrayListDemo { public static void main(String[] args) { ArrayList arrlist = new ArrayList(5); arrlist.add("G"); arrlist.add("E"); arrlist.add("F"); arrlist.add("M"); System.out.println("Size of list: " + arrlist.size()); for (String value : arrlist) { System.out.println("Value = " + value); } ...
Read MoreWhat does the method size() do in java?
The size() method of the class java.util.ArrayList returns the number of elements in this list i.e. the size of the list.Exampleimport java.util.ArrayList; public class ArrayListDemo { public static void main(String[] args) { ArrayList arrlist = new ArrayList(5); arrlist.add(15); arrlist.add(20); arrlist.add(25); arrlist.add(22); for (Integer number : arrlist) { System.out.println("Number = " + number); } int retval = arrlist.size(); System.out.println("Size of list = " + retval); } }OutputNumber = 15 Number = 20 Number = 25 Number = 22 Size of list = 4
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