Java/j2Ee Discussions

[chinni005]

[quote name='HAPPYNESS' timestamp='1371677575' post='1303871667']
M ki rubberband kattukuni laagukooo ....saregga raayi oka program Chrlapallii mayya rasinattu lekapote google nundi anna ettukura clear ga unna example [img]http://i.imgflip.com/1tu9a.gif[/img]
[/quote]
[size=4] [/size]

[biscuitRAJA000]

[quote name='Chinni_' timestamp='1371677608' post='1303871671']
haffy vuncle ni chusi nerchuko
[/quote]
alage

[cherlapalli_jailer]

[quote name='HAPPYNESS' timestamp='1371677248' post='1303871635']
How will you write a JUnit case to handle following scenario. Will you handle checked or unchecked exception
- There are only 10 gates available at an Airport. Junit Scenario to handle if the Number of Planes are more than 10.


idoka interview question
[/quote]


public boolean/int isGateAvaialbe() {
//get the total list of gates available
//or return the boolean

}

if(isGateAvaialbe() )or count >o
{
getThegetNumber()//may be longest duration of empty
}

public void occupayGate(){
}

in this line we can write juint cases accordingly
if this is what u r looking let me know we will work further

[cherlapalli_jailer]

another good example as u said is logger./ properties

so in interview u can tell there were 2 secnerios' like one DBConnection and logger

[king420]

[quote name='cherlapalli_jailer' timestamp='1371677843' post='1303871698']
another good example as u said is logger.

so in interview u can tell there were 2 secnerios' like one DBConnection and logger
[/quote]
ok mayyaa

String Immutable ante enti koncham cheppu

[king420]

Aspect Oriented Programming ante enti?

Aspect
Advice
Point Cut
JoinPoint

ivanni adugutunnaru

[chinni005]

[quote name='HAPPYNESS' timestamp='1371677959' post='1303871713']
ok mayyaa

String Immutable ante enti koncham cheppu
[/quote]
[color=#000000][font=Arial,]String is immutable means that you cannot change the object itself, but you can change the reference ofcourse. When you called [/font][/color]a = "ty"[color=#000000][font=Arial,], you are actually changing the reference of [/font][/color]a[color=#000000][font=Arial,] to a new object created by the String literal [/font][/color]"ty"[color=#000000][font=Arial,]. Changing an object means to use its methods to change one of its fields, for example:[/font][/color]

Foo x = new Foo("the field");
x.setField("a new field");

System.out.println(x.getField()); // prints "a new field"


String s = "some text";
s.substring(0,4);
System.out.println(s); // still printing "some text"
String a = s.substring(0,4);
System.out.println(a); // prints "some"

[chinni005]

[quote name='HAPPYNESS' timestamp='1371678045' post='1303871722']
Aspect Oriented Programming ante enti?

Aspect
Advice
Point Cut
JoinPoint

ivanni adugutunnaru
[/quote]
[img]http://www.andhrafriends.com/uploads/gallery/album_15/gallery_24383_15_124772.gif[/img]

[cherlapalli_jailer]

[quote name='HAPPYNESS' timestamp='1371678045' post='1303871722']
Aspect Oriented Programming ante enti?

Aspect
Advice
Point Cut
JoinPoint

ivanni adugutunnaru
[/quote]
neeyamma mari intha daarunam enti bayya?

manam development cheyyala leka ....java lanti inko language raayala? thokka gallaki

[king420]

[quote name='Chinni_' timestamp='1371678111' post='1303871730']
[color=#000000][font=Arial,]String is immutable means that you cannot change the object itself, but you can change the reference ofcourse. When you called [/font][/color]a = "ty"[color=#000000][font=Arial,], you are actually changing the reference of [/font][/color]a[color=#000000][font=Arial,] to a new object created by the String literal [/font][/color]"ty"[color=#000000][font=Arial,]. Changing an object means to use its methods to change one of its fields, for example:[/font][/color]

Foo x = new Foo("the field");
x.setField("a new field");

System.out.println(x.getField()); // prints "a new field"


String s = "some text";
s.substring(0,4);
System.out.println(s); // still printing "some text"
String a = s.substring(0,4);
System.out.println(a); // prints "some"


[/quote]


endi raa idi..equals() , == use chesi cheppu clear ga... FOO endi ra inkem dorakaleda ...neenu asale 1 line code raste 10 error lu vastaiii

[king420]

Interview ki Basics ne atu thippi itu thipppi adugutunnaru real time scenario lo so baaga brain storming cheyyali

[king420]

Different stages of a thread

New
Runnable
Blocked
Waiting
Time-Waiting
Terminated

NEW
A thread that has not yet started is in this state.
RUNNABLE
A thread executing in the Java virtual machine is in this state.
BLOCKED
A thread that is blocked waiting for a monitor lock is in this state.
WAITING
A thread that is waiting indefinitely for another thread to perform a particular action is in this state.
TIMED_WAITING
A thread that is waiting for another thread to perform an action for up to a specified waiting time is in this state.
TERMINATED
A thread that has exited is in this state.

[king420]

Executing Synchronous and Asynchronously

[king420]

[quote name='JAINTR' timestamp='1371673235' post='1303871257']
multiple threading in corejava is must to learn?
[/quote]


For example, when downloading
a large file (e.g., an image, an audio clip or a video clip) over the Internet, the user may not want to wait until the entire clip downloads before starting the playback. To solve this problem,multiple threads can be used—one to download the clip, and another to play it. These activities proceed concurrently. To avoid choppy playback, the threads are synchronized (that is, their actions are coordinated) so that the player thread doesn’t begin until there’s a sufficient amount of the clip in memory to keep the player thread busy. The Java Virtual Machine (JVM) creates threads to run programs and threads to perform housekeeping tasks such as garbage collection.

[cherlapalli_jailer]

[quote name='HAPPYNESS' timestamp='1371677959' post='1303871713']
ok mayyaa

String Immutable ante enti koncham cheppu
[/quote]

String is immutable

StringBuffer is mutable..

is the simple answer..

waht we do normally is

String str = new String() ;

Str = Str +"1" //like looping ; or Str = "1" + str ;

litterly every time we are reframing the value of string

where as StringBuffer sb = new StringBuffer() ;
sb.append("1") ;

thats all we are appened new value every time to exisitng