why do we need wrapper classes in java

why do we need wrapper classes in java

Java is an object-oriented language and can view everything as an object. A simple file can be treated as an object, an address of a system can be seen as an object, an image can be treated as an object (with java. awt. Image) and a simple data type can be converted into an object (with wrapper classes). This tutorial discusses wrapper classes. Wrapper classes are used to convert any data type into an object. The primitive data types are not objects; they do not belong to any class; they are defined in the language itself. Sometimes, it is required to convert data types into objects in Java language. For example, upto JDK1. 4, the data structures accept only objects to store. ...

 why does my car smell like burning plastic

why does my car smell like burning plastic

There are several causes that create a burning smell from the car. Normally burning occurs when two surfaces are rubbing together. If you notice any engine smells, then stop driving your car immediately. Many times a burning smell will come from your clutch. This can occur when you are changing gears. This is a special type of burning, like burning newspaper. Basically the face of the clutch burns off as the clutch slips. It smells papery because the surface of the clutch actually is a type of paper composition. It is important that you learn how to use the clutch properly to stop doing this. Do not ride the clutch. If you do this too often then you may need to have the clutch replaced. You can also develop a burnt smell from the brakes. This occurs if you are riding the brakes or braking

 why do you get caps on your teeth

why do you get caps on your teeth

A is a -shaped "cap" that is placed over a -- to cover the to restore its shape and size, strength, and improve its appearance. The crowns, when cemented into place, fully encase the entire visible portion of a tooth that lies at and above the gum line. Why Is a Dental Crown Needed? A To protect a weak tooth (for instance, from decay) from breaking or to hold together parts of a cracked tooth To restore an already To hold a To cover a For children, a crown may be used on primary (baby) teeth in order to: Save a tooth that has been so damaged by decay that it can't support a filling. Protect the teeth of a child at high risk for tooth decay, especially when a child has difficulty keeping up with daily oral hygiene. Decrease the frequency of general anesthesia for children unable because

 why does my ex hate me when he dumped me

why does my ex hate me when he dumped me

Long story short. My boyfriend and I lived together for 6 months together 9months. He broke up with me because of my insecurities. Fine. He said he needed space and that he doesn t want to see anyone anytime soon if ever. Okay being over dramatic but I took it as though he s not looking. Well to pick up my stuff he was acting weird towards me. After a pretty friendly break up (he even cried) things just felt like he could care less about me. I found out he s on a free dating site talking to girls who I thought weren t his type (piercings of the lip and tongue. When I jokingly Asked about those he said they were trashy) anyways, he said he s not talking or seeing anyone but he s allowed to look around. Very true. I just don t get how you can love me and say you need space and cry over me

 why does my cat bite my feet

why does my cat bite my feet

Listen to the audio version of this article Does this describe your home? You get up out of bed and start walking to the bathroom, only to have your ankles become the target of a cat attack. Does your cat hide under the bed until the moment when she sees your bare feet hit the floor and then she sinks her teeth or into your flesh? Perhaps your cat waits around the corner for that moment when you walk down the hallway and then she launches into a perfectly timed ankle. Is there a solution? Yes. The reason your cat targets your ankles is because theyБre a moving target and if thereБs no other option for play or stimulation, the catб will focus on what s currently available. The prey-drive is triggered by objects moving across or away from the catБs visual field. If your cat isnБt getting

 why do the angles of a quadrilateral equal 360

why do the angles of a quadrilateral equal 360

Angles are measured in degrees, written `. The maximum angle is 360`. This is the angle all the way round a point. Half of this is the angle on a straight line, which is 180`. The video below explains how to calculate related angles, adjacent angles, interior angles and supplementary angles. Related Angles Lines AB and CD are parallel to one another (hence the on the lines). a and d are known as vertically opposite angles. Vertically opposite angles are equal. (b and c, e and h, f and g are also vertically opposite). g and c are corresponding angles. Corresponding angles are equal. (h and d, f and b, e and a are also corresponding). d and e are alternate angles. Alternate angles are equal. (c and f are also alternate). Alternate angles form a 'Z' shape and are sometimes

 why do we celebrate memorial day in the us

why do we celebrate memorial day in the us

Memorial Day may bePthe unofficial start of summer, but it's so much more than an excuse for aPthree-day weekend. It's a U. S. holiday with a lot of history and lasting significance. Held annually on the last Monday of May, Memorial Day dates back to the Civil War. Who exactly created it and where are unclear, but legend has it that the tradition began in 1864. That's when three women from, put flowers on the graves of loved ones who had died in the war, including a young manPkilledPin the Battle of Gettysburg. Related:P By 1865, people in states such as South Carolina and Mississippi were participating in unofficial ceremonies that preceded Memorial Day. But Waterloo, New York, claims to be the birthplace of the holiday, given that it held what Nelson Rockefeller call the "first,

 why do we cough during a cold

why do we cough during a cold

Coughs are an ever-present wintertime companion. But does coughing serve any purpose at all, or is it just a clever method that viruses use to spread? is a normal reflex to clear the airway of small particles, microorganisms, mucus, or food or drinks accidentally going down "the wrong pipe. " But when we are plagued with a pesky cold or infection, cough takes on a new dimension. What often starts as a tickle in the throat at the first sign of an upper respiratory tract infection can easily turn into a full-blown dry cough, most likely followed by a hacking, mucus-producing cough that can be very uncomfortable. Why do we cough when we have a flu or cold infection? We examine what research has revealed about the mechanisms behind cough and who benefits: the virus, or us? In an in the

 why does high school start so early

why does high school start so early

One of life s greatest mysteries. PNot to mention a question that a good majority of high school students have asked. Why does class start so early? After all, how many students enjoy waking up at 6:30-7 just so they can make it to first period? PMaybe you re one of the lucky ones who s school doesn t start till 8:30 or 9. PBut for many students around the country, that first bell rings at 7:30 or earlier. Why should class start so much earlier than the typical 9-5 work day? Students Aren t the Only Ones Who Think it s Too Early Susan Whooley (who is the executive director of the American School Health Association) thinks starting school so early is one of the worst things you can do to a student s readiness. PPhysically andPpsychologicallyP a typical teenager isn t geared to walk up and