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Selasa, 28 April 2015

JAVA - How To Get Primitive And Pairs Numbers From Int Array In Java NetBeans

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JAVA - How To Find Primitive And Pairs Numbers From Int Array In Java NetBeans

__________________________________________________________________________

In This Java Code We Will See How To Find The Primitive Numbers Or The Pairs Numbers From An Int Array In Java Programming Language.

Source Code:

package javaapp;

public class Woirk{

public static void main(String[] args){

int[] ns = {2,54,3,24,5,23,76,13,10,19,88,41};

//get pairs numbers

  System.out.println("List Of Pairs Numbers");
for(int i = 0; i < ns.length; i++){
if(ns[i]%2 == 0)
System.out.println(ns[i]);
}

System.out.println("________");

//get Primitive numbers

System.out.println("List Of Primitive Numbers");
for(int i = 0; i < ns.length; i++){
if(ns[i]%2 != 0)
System.out.println(ns[i]);
}

}


}

/////////OUTPUT:

List Of Pairs Numbers
2
54
24
76
10
88
________
List Of Primitive Numbers
3
5
23
13
19

41

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Minggu, 26 April 2015

How To Create A Program To Print Trapezoid Star Program In Java How To Create A Trapezoid Star Program In Java How To Make A Program To Print A Trapezoid Using For Loop In Java java star Trapezoid

JAVA - How To Create A Trapezoid Star Program In Java

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JAVA - How To Create A Program To Print Trapezoid Star Program In Java

In This Java Code We Will See How To Make A Program To Print A Trapezoid Using For Loop In Java Programming Language.

Source Code:

package javaapp;

public class Woirk {

public static void main(String[] args){

int k = 10;//number of spaces
int d = 20;//number of stars

//loop for 10 lines
for(int i = 0; i < 10; i++){

for(int l = k; l > 1; l--){
System.out.print(" ");//two spaces
}
//loop for d stars
for(int j = 0; j < d; j++){
System.out.print("*");
}

System.out.println();

k--;//discriminate the number of spaces
d = d+4;//increment the number of stars
}
}

}

//////////OUTPUT:

Trapezoid Star Program In Java

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Sabtu, 25 April 2015

How To Create A Parallelogram Star Program In Java How To Create A Program To Print Parallelogram Star Program In Java How To Make A Program To Print A Parallelogram Using For Loop In Java java star

JAVA - How To Create A Parallelogram Star Program In Java

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JAVA - How To Create A Program To Print Parallelogram Star Program In Java

In This Java Code We Will See How To Make A Program To Print A Parallelogram Using For Loop In Java Programming Language.

Source Code:

package javaapp;
public class Woirk {

public static void main(String[] args){

//loop for 10 lines
for(int i = 0; i < 10; i++){

//loop for 40 stars
for(int j = 0; j < 40; j++){
System.out.print("*");
}

System.out.println();

//loop for spaces
for(int l = 0; l <= i; l++){
System.out.print(" ");//two space
}
}
}

}

//////////OUTPUT:

Parallelogram Star Example In Java

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Generic Class In Java How To Create A Generic Class Example In Java NetBeans How To Create A Generic Class In Java NetBeans How To Create Your Own Generic Class In Java NetBeans java

JAVA - How To Create A Generic Class In Java NetBeans

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JAVA - How To Create Your Own Generic Class In Java NetBeans

In This Java Code We Will See How To Create A Generic Class Example In Java Programming Language.

Source Code:

package javaapp;
public class Woirk {

//create a generic class

public static class GenericClass<T,K>{
//create two attribute
//T and K are types now
private T Tval;
private K Kval;

//create a constructor without parameters
public GenericClass(){
this.Tval = null;
this.Kval = null;
}
//create a constructor with parameters
public GenericClass(T tval, K kval){
this.Tval = tval;
this.Kval = kval;
}

//get the value from Tval
public T getTVal(){
return this.Tval;
}

//set a value to Tval
public void setTVal(T t){
this.Tval = t;
}

//get the value from Kval
public K getKVal(){
return this.Kval;
}

//set a value to Kval
public void setKVal(K k){
this.Kval = k;
}

public void printValues(){
System.out.println(this.Tval+" - "+this.Kval);
}

}

public static void main(String[] args){

GenericClass<Integer,String> gc;
gc = new GenericClass<Integer,String>();
gc.printValues();
gc = new GenericClass<Integer,String>(11111,"JAVA");
gc.printValues();
gc = new GenericClass<Integer,String>(22222,"CSHARP");
gc.printValues();
gc.setTVal(33333);
gc.setKVal("PHP");
System.out.println(gc.getTVal()+" - "+gc.getKVal());
}


}

//////////OUTPUT:

null - null
11111 - JAVA
22222 - CSHARP

33333 - PHP

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Jumat, 24 April 2015

Equilateral Triangle star Program In Java How To Create A Equilateral Triangle star Program In Java How To Create A Program To Print Equilateral Triangle star Program In Java java star

JAVA - How To Create A Equilateral Triangle Star Program In Java

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JAVA - How To Create A Program To Print Equilateral Triangle Star Program In Java

In This Java Code We Will See How To Make A Program To Print A Equilateral Triangle Using For Loop In Java Programming Language.

Source Code:

package javaapp;
public class Woirk {

public static void main(String[] args){

//20 = how much lines
for(int i = 1; i <= 20; i++)
{
//loop to print stars
for(int t = 1; t <= i; t++)
{
System.out.print("*");
}
//create a new Line
System.out.println();
}
}
}

//////////OUTPUT:

Equilateral Triangle Star Program In Java

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How To Create A Program To Print Pyramid Stars In Java How To Create A Star Pyramid In Java How To Make A Program To Print A Pyramid Using For Loop In Java java star star pyramid in java

JAVA - How To Create A Star Pyramid In Java

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JAVA - How To Create A Program To Print Pyramid Stars In Java

In This Java Code We Will See How To Make A Program To Print A Pyramid Using For Loop

In Java Programming Language.

Source Code:

package javaapp;

public class Woirk {

public static void main(String[] args){

int v = 20;//the number of spaces

//20 = how much lines

for(int i = 1; i <= 20; i++)

{

//loop to print spaces

for(int j = 1; j < v; j++)

{

System.out.print(" ");

}

v = v-1;

//loop to print stars

for(int t = 1; t < i*2; t++)

{

System.out.print("*");

}

//create a new Line

System.out.println();

}

//////////OUTPUT:

Pyramid Program In Java

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Selasa, 21 April 2015

Arraylist Collection How To Display Data From An ArrayList In Java How To Display Data From An ArrayList In Java NetBeans How To Use ArrayList In Java How To Use ArrayList In Java NetBeans java

JAVA - How To Use ArrayList In Java NetBeans

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Java - How To Display Data From An ArrayList In Java

In this java Collection tutorial we will see How To Use An ArrayList.

1: how to create a ArrayList

2: how to dispaly data from it

3: how to clear all elements from it
And More.......

*Java Courses : Java Complete Course
Java Swing Course

Source Code:

package javaapp;
import java.util.ArrayList;
public class Woirk {

public static void main(String[] args){

ArrayList list = new ArrayList();

//add data to the ArrayList
list.add(1);
list.add("string");
list.add('c');
list.add(false);
list.add(10.23f);
list.add(null);

System.out.println("display data from Arraylist");

displaydata(list);

System.out.println("______ Remove elements from ArrayList");

list.remove(3);
displaydata(list);

System.out.println("________ Clear All elements from ArrayList");

list.clear();
displaydata(list);
}

//create a methode to dispaly values from an arraylist
public static void displaydata(ArrayList l){
for(int i = 0; i < l.size(); i++){
System.out.println(l.get(i));
}
}
}

////////////// OUTPUT:

display data from Arraylist
1
string
c
false
10.23
null
______ Remove elements from ArrayList
1
string
c
10.23
null
________ Clear All elements from ArrayList

Another Source Code:

package javaapp;

import java.util.List;
import java.util.ArrayList;

public class Woirk {

public static void main(String[] args){

ArrayList list = new ArrayList();

ArrayList<Integer> list2 = new ArrayList<Integer>();
list2.add(100);
list2.add(200);
list2.add(300);
list2.add(400);
list2.add(500);

//add elements to the list
for(int i = 0; i < 10; i++){
list.add(i);
}

//add element to a specific position in ArrayList
list.add(list.size()-1,99999);

/*
Insert all elements in The liste2 in list
starting at the specific positionc (in this example 5)
*/
list.addAll(5,list2);

//display ArrayList data
System.out.println(list);

//cast ArrayList to Object[]
Object[] obj = list.toArray();
System.out.println("Start Of ToArray");
for(Object o : obj)
System.out.print(" - "+o);
System.out.println("\n End Of ToArray");

//clone or copy the list elements to another list
ArrayList li = new ArrayList();
li = (ArrayList<Integer>) list.clone();

System.out.println("The List Clone Start.......");

System.out.println(li);

System.out.println("The List Clone End.......");

/*
get a sublist between to index
fromIndex inclusive, and toIndex exclusive
*/
List<Integer> sublist = list.subList(10, 13);

System.out.println("The subList Start.......");

System.out.println(sublist);

System.out.println("The SubList End.......");

// return the index of the element
//-1 if not exist
int index = list.indexOf(99999);
System.out.println("The Index Of 99999 Is: "+ index);

//if the element exist = true, if not = false
boolean test = list.contains(300);
System.out.println("the list contains 300? => "+test);

//clear all the elemnts in the arraylist

System.out.println("list size before the clear: "+list.size());
list.clear();
System.out.println("list size after the clear: "+list.size());

//see if the list is empty
System.out.println("Check if the list is empty: "+list.isEmpty());
}

}

////////////// OUTPUT:

[0, 1, 2, 3, 4, 100, 200, 300, 400, 500, 5, 6, 7, 8, 99999, 9]
Start Of ToArray
- 0 - 1 - 2 - 3 - 4 - 100 - 200 - 300 - 400 - 500 - 5 - 6 - 7 - 8 - 99999 - 9
End Of ToArray
The List Clone Start.......
[0, 1, 2, 3, 4, 100, 200, 300, 400, 500, 5, 6, 7, 8, 99999, 9]
The List Clone End.......
The subList Start.......
[5, 6, 7]
The SubList End.......
The Index Of 99999 Is: 14
the list contains 300? => true
list size before the clear: 16
list size after the clear: 0

Check if the list is empty: true

see also the Hashtable
see also the LinkedList

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