Tag Archives: java

4,397 views

Java pass variable as reference

Posted on July 30, 2012 by J K

Integer, Float, String, List passed as reference in JAVA example source code: // List passed as reference JAVA List<Integer>list = new ArrayList<Integer>();   public void fc (List<Integer>listRef){ listRef.add(7); listRef.add(5); } fc(list); // 7, 5     // String passed as … Continue reading →

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16,921 views

Round number float – double to int – long Java example

Posted on July 15, 2012 by J K

int nf = Math.round(5.789f); System.out.print(nf); // 6   float f = 28.611f; int n3 = Math.round(f); System.out.println(n3); // 29   double d = 1234.56; long lon = Math.round(d); System.out.println(lon); // 1235   int diff = 90 – 40; // float … Continue reading →

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4,673 views

Iterate HashMap getKey getValue Java Example

Posted on January 4, 2012 by J K

HashMap<String,Locale> _mapOfLocale = new HashMap<String,Locale>(); _mapOfLocale.put("French",Locale. FRENCH ); _mapOfLocale.put("German",Locale. GERMAN ); _mapOfLocale.put("Italian",Locale. ITALIAN );   for (Entry<String, Locale> entry : _mapOfLocale.entrySet()) {   System.out.println(entry.getKey()); System.out.println(entry.getValue());   }

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8,953 views

Array copy to Array Java Android example

Posted on November 20, 2011 by J K

String[] source = {"Hello","world","by","Android"};   String[] destination = new String[source.length];   System.arraycopy(source, 0, destination, 0, source.length);

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6,594 views

Map TreeMap get values to array Java Android example

Posted on October 6, 2011 by J K

import java.util.Map; import java.util.TreeMap;   public class MainClass { public static void main(String[] arg) {   // english;germany dictionary String[] arrayOfString = { "one;eine", "two;zwei", "two sets of;zwei" , "three;drei", "four;vier" };   Map<String, String> map = new TreeMap<String, String>(); … Continue reading →

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9,227 views

Map TreeMap get key by value Java Android example

Posted on October 6, 2011 by J K

Get key by value from Map Java Android example MainClass.java import java.util.HashSet; import java.util.Iterator; import java.util.Map; import java.util.Map.Entry; import java.util.Set; import java.util.TreeMap;   public class MainClass { public static void main(String[] arg) {   // english;germany dictionary String[] arrayOfString = … Continue reading →

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16,505 views

Hashtable key value pair add put get pair Java Android example

Posted on October 5, 2011 by J K

How add pair of strings to Hashtable, how get pair key value from Hashtable, how split string, basic Java Android example. MainClass.java import java.util.Enumeration; import java.util.Hashtable; public class MainClass { public static void main(String[] arg) {   // english;germany dictionary … Continue reading →

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9,449 views

Switch Statement Java basic example

Posted on October 5, 2011 by J K

Switch statement with numbers and array of strings Java example. public class MainClass { public static void main(String[] arg) { String[] arrayOfString = { "One", "Two", "Three", "Four" };   int i = 2; switch (i) { case 1: { … Continue reading →

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14,633 views

Goto labeled statement in Java example

Posted on October 4, 2011 by J K

Goto in for cycle Java example source code. MainClass.java public class MainClass { public static void main(String[] arg) { String[] arrayOfString = {"nothing", "Hello", "people" , "bye-bye", "hello", "world!", "end" };   OuterLoop: for (int i = 0;i<6; i++) { … Continue reading →

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10,705 views

break statement in Java Android example

Posted on October 4, 2011 by J K

break statement in Java Android basic example MainClass.java public class MainClass { public static void main(String[] arg) { String[] arrayOfString = {"nothing", "Hello", "people" , "bye-bye", "hello", "world!", "end" };   for (int i = 0; i < arrayOfString.length; i++) … Continue reading →

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