ElaKiri Programmer's Club

[DooA]

Thanks machan wade akragaththa

JVM heap memory size eke awulak thibbe. heap size eka increase karagaththa ita passe baba wage wada kara ++

Ehemada watinawa danagaththa eka. Thnx machn

 

[MihiCherub]

machan wade karagaththa code eke nemei JVM heap memory size eke awulak thibbe. heap size eka increase karagaththa

ado balapan oka mathak une nane.. matat okama una arraylist ekakata object dagena.. aparade..

 

[Error365!]

Ehemada watinawa danagaththa eka. Thnx machn

ela machan

ado balapan oka mathak une nane.. matat okama una arraylist ekakata object dagena.. aparade..

ow ban matath hithaganna baruwa hitiye. passe memory eka increase karapu gaman wade goda giya

 

[MihiCherub]

ela machan



ow ban matath hithaganna baruwa hitiye. passe memory eka increase karapu gaman wade goda giya

Eth ban stack overflow exception eka enawa neda?
Nath nam Heap eka gana hari kiyala exception ekak enawane..

 

[Error365!]

Eth ban stack overflow exception eka enawa neda?
Nath nam Heap eka gana hari kiyala exception ekak enawane..

eka thamai ban. awe naha kisima exception ekak. awa nam hoyaganna thibbane mokadda lede kiyala. passe nikamata heap size eka increase kara

 

[DooA]

Eth ban stack overflow exception eka enawa neda?
Nath nam Heap eka gana hari kiyala exception ekak enawane..

stackoverflow wenne stack eka loku unoth.
But methana out of memory exception ekak enna one.

 

[tery123]

මචන්ලා uml වල මේකේ මේ තියෙන association එක නැතුව ඔය +DISPLAYMEMBER() METHOD එක concreate method එකක් කරලා ඔය association නැතුව දාන්න පුළුවන් නේද??? +display() එක abstract තියෙලා..

මේක කලේ මෙන්න මේක improve කරන්න...

මෙන්න මේ විදියට...

 

[tery123]

class polygan{
public void set(int l,int w){

	protected int length=l;
	protected int width=w;

	}
}
class rectangle extends polygan{

public int recAria(){

	return width*length;
	}
}

class triangle extends polygan{

	public int triAria(){

		return width*length/2;
		}
}
class inheritance{

	public static void main(String args[]){

		rectangle rec=new rectangle();
		rec.set(10,20);
		System.out.println("aria of the rectangle is : " + rec.recAria());

		triangle tri=new ttriangle();
		tri.set(10,50);
		System.out.println("aria of the triangle is : " + tri.triAria());
		}
}

ai bun meke protected danna denne naththe

 

[DooA]

class polygan{
public void set(int l,int w){

	protected int length=l;
	protected int width=w;

	}
}
class rectangle extends polygan{

public int recAria(){

	return width*length;
	}
}

class triangle extends polygan{

	public int triAria(){

		return width*length/2;
		}
}
class inheritance{

	public static void main(String args[]){

		rectangle rec=new rectangle();
		rec.set(10,20);
		System.out.println("aria of the rectangle is : " + rec.recAria());

		triangle tri=new ttriangle();
		tri.set(10,50);
		System.out.println("aria of the triangle is : " + tri.triAria());
		}
}

ai bun meke protected danna denne naththe

Access modifier danna puluwan field variable walata vitharai.

E kiwwe clz eka athule but method walin eliye thiyena ewata

 

[tery123]

Access modifier danna puluwan field variable walata vitharai.

E kiwwe clz eka athule but method walin eliye thiyena ewata

ela machan

 

[tery123]

public class SingletonDemo {
private static SingletonDemo singletonObject;
private SingletonDemo() {
// Optional Code
}
public static SingletonDemo getSingletonObject(){
if (singletonObject == null){
singletonObject = new SingletonDemo();
}
return singletonObject;
}
}

mokakda bun meke karala thiyenne

 

[MihiCherub]

public class SingletonDemo {
private static SingletonDemo singletonObject;
private SingletonDemo() {
// Optional Code
}
public static SingletonDemo getSingletonObject(){
if (singletonObject == null){
singletonObject = new SingletonDemo();
}
return singletonObject;
}
}

mokakda bun meke karala thiyenne

Design Patterns.. eka Object ekai hadanne..

 

[DooA]

public class SingletonDemo {
private static SingletonDemo singletonObject;
private SingletonDemo() {
// Optional Code
}
public static SingletonDemo getSingletonObject(){
if (singletonObject == null){
singletonObject = new SingletonDemo();
}
return singletonObject;
}
}

mokakda bun meke karala thiyenne

Singleton design pattern eka.

Ubata ba oya clz eke instance hadanna. New SingleDemo(); kiyala

Karanne puluwan SingleDemo.getInstance(); kiyala. Ethakota hama welawema return karanne ekama instance eka. Ube mulu program ekema oya clz eke eka instance ekak vitharai thiyenne.

 

[tery123]

Singleton design pattern eka.

Ubata ba oya clz eke instance hadanna. New SingleDemo(); kiyala

Karanne puluwan SingleDemo.getInstance(); kiyala. Ethakota hama welawema return karanne ekama instance eka. Ube mulu program ekema oya clz eke eka instance ekak vitharai thiyenne.

meka saralawa pennanan widiyak nadda patern eka use nokara?????

A class has a single constructor which is only visible within the class. What purpose might this class serve?
(5 marks)
e) Write some code which is an example of the situation described in part (d)

menna mekai prashne

 

[DooA]

meka saralawa pennanan widiyak nadda patern eka use nokara?????

A class has a single constructor which is only visible within the class. What purpose might this class serve?
(5 marks)
e) Write some code which is an example of the situation described in part (d)

menna mekai prashne

ප්‍රශ්නෙට උත්තරේ නම් ඕක තමයි මචං. උන් ඉල්ලන්නේ singalton pattern එක.

With the Singleton design pattern you can:

Ensure that only one instance of a class is created

Provide a global point of access to the object

Allow multiple instances in the future without affecting a singleton class's clients

 

[tery123]

ප්‍රශ්නෙට උත්තරේ නම් ඕක තමයි මචං. උන් ඉල්ලන්නේ singalton pattern එක.

With the Singleton design pattern you can:

Ensure that only one instance of a class is created

Provide a global point of access to the object

Allow multiple instances in the future without affecting a singleton class's clients

machan pe patterns gana igena ganna pothak ehema nadda????

 

[J Sparrow]

ඔන්න j Sparrowත් set උනා!

Full classic details of Singleton pattern
http://www.javaworld.com/article/2073352/core-java/simply-singleton.html

 

[tery123]

ඔන්න j Sparrowත් set උනා!

Full classic details of Singleton pattern
http://www.javaworld.com/article/2073352/core-java/simply-singleton.html

patta thx machan

 

[sw7x]

මචන්ලා මට web browser එක හා... එහි ඇති JS API Interfaces ගැන ඉගෙන ගන්න ඔන.....
දන්න කෙනෙක් ඉන්නවනම් ලින්ක් එකක් හරි කමක් නැ දෙන්න

 

[D_Mad]

mamath awa onna.. mam coding walata new tikak