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Articles by AmitDiwan
Page 621 of 840
Java program to find Maximum and minimum element's position in a list
To find the maximum and minimum element’s position in a list, the Java program is as follows −Exampleimport java.util.*; import java.util.Arrays; import java.util.Collections; public class Demo{ public static int index_val(int my_arr[], int t){ if (my_arr == null){ return -1; } int len = my_arr.length; int i = 0; while (i < len){ if (my_arr[i] == t){ return i; } else { ...
Read MoreFind the uncommon values concatenated from both the strings in Java
To find the uncommon values concatenated from both the strings in Java, the code is as follows −Exampleimport java.util.*; import java.lang.*; import java.io.*; public class Demo{ public static String concat_str(String str_1, String str_2){ String result = ""; int i; HashMap my_map = new HashMap(); for (i = 0; i < str_2.length(); i++) my_map.put(str_2.charAt(i), 1); for (i = 0; i < str_1.length(); i++) if (!my_map.containsKey(str_1.charAt(i))) result += str_1.charAt(i); else my_map.put(str_1.charAt(i), ...
Read MoreFind the first repeated word in a string in Java
To find the first repeated word in a string in Java, the code is as follows −Exampleimport java.util.*; public class Demo{ static char repeat_first(char my_str[]){ HashSet my_hash = new HashSet(); for (int i=0; i
Read MoreJava program to find IP Address of the client
To find the IP Address of the client, the Java code is as follows −Exampleimport java.net.*; import java.io.*; import java.util.*; import java.net.InetAddress; public class Demo{ public static void main(String args[]) throws Exception{ InetAddress my_localhost = InetAddress.getLocalHost(); System.out.println("The IP Address of client is : " + (my_localhost.getHostAddress()).trim()); String my_system_address = ""; try{ URL my_url = new URL("http://bot.whatismyipaddress.com"); BufferedReader my_br = new BufferedReader(new InputStreamReader(my_url.openStream())); my_system_address = my_br.readLine().trim(); } ...
Read MoreReplace null values with default value in Java Map
To replace null values with default value in Java Map, the code is as follows −Exampleimport java.util.*; import java.util.stream.*; public class Demo{ public static Map null_vals(Map my_map, T def_val){ my_map = my_map.entrySet().stream().map(entry -> { if (entry.getValue() == null) entry.setValue(def_val); return entry; }) .collect(Collectors.toMap(Map.Entry::getKey, Map.Entry::getValue)); return my_map; } public static void main(String[] args){ Map my_map = new HashMap(); my_map.put(1, null); my_map.put(2, 56); ...
Read MoreReplacing 'public' with 'private' in "main" in Java
When ‘public’ is used in ‘main’ −Examplepublic class Demo{ public static void main(String args[]){ System.out.println("This is a sample only"); } }OutputThis is a sample onlyA class named Demo contains the main function that is public. It has a print function, which successfully compiles, executes and prints the message on the console.When ‘public’ is replaced with ‘private’Examplepublic class Demo{ private static void main(String args[]){ System.out.println("This is a sample only"); } }OutputError: Main method not found in class Demo, please define the main method as: public static void main(String[] args) or a ...
Read MoreJava Program for n-th Fibonacci number
There are multiple ways in which the ‘n’thFibonacci number can be found. Here, we will use dynamic programming technique as well as optimizing the space.Let us see an example −Examplepublic class Demo{ static int fibo(int num){ int first = 0, second = 1, temp; if (num == 0) return first; if (num == 1) return second; for (int i = 2; i
Read MoreJava Program to check if count of divisors is even or odd
To check if the count of divisors is even or odd, the Java code is as follows −Exampleimport java.io.*; import java.math.*; public class Demo{ static void divisor_count(int n_val){ int root_val = (int)(Math.sqrt(n_val)); if (root_val * root_val == n_val){ System.out.println("The number of divisors is an odd number"); }else{ System.out.println("The number of divisors is an even number"); } } public static void main(String args[]) throws IOException{ divisor_count(25); } }OutputThe number of divisors is an odd ...
Read MoreJava Program to check whether it is possible to make a divisible by 3 number using all digits in an array
To check whether it is possible to make a divisible by 3 number using all digits in an array, the Java code is as follows −Exampleimport java.io.*; import java.util.*; public class Demo{ public static boolean division_possible(int my_arr[], int n_val){ int rem = 0; for (int i = 0; i < n_val; i++) rem = (rem + my_arr[i]) % 3; return (rem == 0); } public static void main(String[] args){ int my_arr[] = { 66, 90, 87, 33, 123}; ...
Read MoreJava Program to Convert Iterator to Spliterator
To convert Iterator to Spliterator, the Java code is as follows −Exampleimport java.util.*; public class Demo{ public static Spliterator getspiliter(Iterator iterator){ return Spliterators.spliteratorUnknownSize(iterator, 0); } public static void main(String[] args){ Iterator my_iter = Arrays.asList(56, 78, 99, 32, 100, 234).iterator(); Spliterator my_spliter = getspiliter(my_iter); System.out.println("The values in the spliterator are : "); my_spliter.forEachRemaining(System.out::println); } }OutputThe values in the spliterator are : 56 78 99 32 100 234A class named Demo contains a function named ‘getspiliter’ that returns a spliterator. In the ...
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