21. What’s JNI ? Using JNI we are able to phone call features which are written in most other dialects regarding Coffees. Adopting the are its advantages and disadvantages: Advantages: We wish to make use of established library that has been in the past composed various other language. We need to call Windows API mode. For the sake of performance speed. We should call API intent behind some host product that is during c or c++ regarding coffees visitors.
23. What exactly is JFC ? Coffee Foundation Kinds are: Important AWT step 1.step one Access to screen Smaller section: which happen to be software parts that don’t subclass a current AWT interface function. They don’t really play with native screen points given that available with the fresh new hidden windowing program. Coffee appearance and feel Help having native appearance and feel Attributes eg Java2D and Drag and you can Drop
twenty-four. What exactly is Difference between AWT and Move ? Move will bring a richer band of areas than AWT. He’s a hundred% Java-mainly based. AWT while doing so was made towards mind set whenever a component or capacity for a feature weren’t available on a single program, they would not be on people platform. Due to the peer-dependent characteristics regarding AWT, what might work on you to definitely implementation may well not work at another, once the peer-combination might not be because strong. There are many other benefits to Move over AWT: Swing provides both extra portion and you will additional possibilities so you’re able to AWT-substitute for areas Move components can transform their appearance in line with the newest “feel and look” collection that’s used. Swing components follow the Model-View-Control (MVC) paradigm, meaning that also have an even more flexible UI. Swing provides “extras” having parts, such as: Symbols on of numerous elements Pretty limits having section Device suggestions for portion Swing elements are lightweight (faster money intensive than simply AWT) Swing provides founded-from inside the twice buffering Move will bring color debugging assistance to own after you make your very own components Move has a number of downsides: It needs Java 2 or yet another Jar file Whenever you are not too cautious when coding, it may be slowly than simply AWT (the components is removed) Move elements that look instance native parts may well not operate just such indigenous parts
twenty five. Provided notepad/Internet explorer or other procedure due to the fact procedure, What takes place for people who begin notepad otherwise Ie 3 x? In which step three process are started otherwise 3 threads try become ? step three independent process are come.
Difficult to debug runtime mistake within the indigenous password
twenty six. Why does bond synchronization happens to the a monitor ? [Question much less clear to me ] The brand new JVM uses tresses along with inspections. A display is basically a guardian because they observe more a series of code, making certain that singular bond at the same time performs this new code. For every display was from the an item resource. When a bond finds the original education inside a block from code it should see an excellent secure for the referenced object. This new thread is not permitted to play the latest code up to they receives the latest lock. Immediately after it’s got obtained brand new secure, the new thread gets in the new take off of protected password. If the bond will leave the fresh cut off, regardless of what they actually leaves the cut-off, it releases brand new secure with the relevant object.
Because of this he is less restrictive than just simple AWT areas
27. How do you label a keen Applet using a java Software mode ? Along these lines: file.appletName.methodCall(. ) Can not work which have Web browser in the event
twenty eight. Will there be any level for the HTML to help you upload and down load files ? I am not saying conscious of HTML tags to simply help me upload a document, we possibly may certianly require some servers front side scripting so you can process that. We are able to certainly fool around with HTML to include a Web dating site grab hyperlink since the follows: code: Click the link so you can obtain