Tag Archives: java

9,981 views

Round number float – double to int – long Java example

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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Iterate HashMap getKey getValue Java Example

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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Array copy to Array Java Android example

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

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Map TreeMap get values to array Java Android example

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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Map TreeMap get key by value Java Android example

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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Hashtable key value pair add put get pair Java Android example

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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Switch Statement Java basic example

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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Goto labeled statement in Java example

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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break statement in Java Android example

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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If, else if, else statement Java Android example

if , else if, else statement with string as a switch statement in 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" }; … Continue reading

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