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Arjun Thakur has Published 1109 Articles
Arjun Thakur
17K+ Views
An element can be removed from a Collection using the Iterator method remove(). This method removes the current element in the Collection. If the remove() method is not preceded by the next() method, then the exception IllegalStateException is thrown.A program that demonstrates this is given as follows.Example Live Demoimport java.util.ArrayList; import ... Read More
Arjun Thakur
892 Views
The previous index and next index in an ArrayList can be obtained using the methods previousIndex() and nextIndex() respectively in the ListIterator Interface.The previousIndex() method returns the index of the element that is returned by the previous() method while the nextIndex() method returns the index of the element that is ... Read More
Arjun Thakur
390 Views
The unmodifiable view of the specified ArrayList can be obtained by using the method java.util.Collections.unmodifiableList(). This method has a single parameter i.e. the ArrayList and it returns the unmodifiable view of that ArrayList.A program that demonstrates this is given as followsExample Live Demoimport java.util.ArrayList; import java.util.ArrayList; import java.util.Collections; import java.util.List; public ... Read More
Arjun Thakur
81 Views
Use the containsKey() method to check whether a particular key exists in IdentityHashMap or not.Create a IdentityHashMapMap m = newIdentityHashMap(); m.put("1", 100); m.put("2", 200); m.put("3", 300); m.put("4", 150); m.put("5", 110); m.put("6", 50); m.put("7", 90); m.put("8", 250); m.put("9", 350); m.put("10", 450);Now, let’s say we need to check whether key 7 exists ... Read More
Arjun Thakur
2K+ Views
To fetch the value for a specific key, use the get() method.As a parameter, set the key you want to fetch and fetch the value.Let’s say you need to fetch value of key 3get("3")The following is an example to fetch the value for a specific key in Java IdentityHashMap −Example Live ... Read More
Arjun Thakur
3K+ Views
You can add a not null column at the time of table creation or you can use it for an existing table.Case 1 − Add a not null column at the time of creating a table. The syntax is as followsCREATE TABLE yourTableName ( yourColumnName1 dataType NOT NULL, ... Read More
Arjun Thakur
402 Views
This example demonstrate about How to read json array in reverse order in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. ... Read More
Arjun Thakur
148 Views
You can try to run the following code to move left animation with keyframes using CSS3ExampleLive Demo h1 { -moz-animation-duration: 3s; -webkit-animation-duration: 3s; ... Read More
Arjun Thakur
91 Views
This example demonstrate about How to sort volley arraylist with custom object in android.Step 1 − Create a new project in Android Studio, go to File ⇒ New Project and fill all required details to create a new project.Step 2 − Add the following code to res/layout/activity_main.xml. ... Read More
Arjun Thakur
1K+ Views
To achieve this, the following is the syntax.UPDATE yourTableName set yourColumnName=concat(ifnull(yourColumnName, ””), ’anyValue1, anyValue2, anyValue);To understand the above syntax, let us first create a table. The query to create a table is as follows -mysql> create table AppendDataDemo -> ( -> StudentId int, -> StudentName varchar(100), -> StudentAge int -> ... Read More