স্বপ্নের প্রতিবিম্ব ...

import java.util.StringTokenizer; public class TokenizerTest { public static void main(String[] args) { String str = "My Name Is Md Faisal Porag"; String split = " "; //Split with space StringTokenizer tokenizer = new StringTokenizer(str, split); while (tokenizer.hasMoreElements()) { System.out.println("String Tokenizer Output : "+ tokenizer.nextElement()); } System.out.println(); String nmbrs = "One,Two,Three,,Four,Five,Six"; String splitWithComa = ","; String[] tokens = nmbrs.split(splitWithComa); int lengthCount = tokens.length; for (int i = 0; i < lengthCount; i++) { System.out.println("Split Output : "+ tokens[i]); } } } View Source Code

import java.util.ArrayList; import java.util.Collections; public class SortingTest { public static void main(String[] args) { ArrayList<String> name = new ArrayList<String>(); name.add("Faisal"); name.add("Porag"); name.add("Rajikul"); name.add("Jhon"); name.add("Vir"); Collections.sort(name); for(String obj: name){ System.out.println(obj); } } } View Source Code

import java.util.HashMap; import java.util.Map; class BookStore{ int bookId,quantity; String bookName,author,publisher; public BookStore(int bookId, int quantity,String bookName, String author, String publisher) { this.bookId = bookId; this.bookName = bookName; this.author = author; this.publisher = publisher; this.quantity = quantity; } } public class HashMapTest { public static void main(String[] args) { //Create map Map<Integer, BookStore> bookMap = new HashMap<Integer, BookStore>(); //Create book BookStore bookStore1 = new BookStore(111, 5, "Java Programming language", "ABCD", "ABCD"); BookStore bookStore2 = new BookStore(112, 10, "Ruby Programming language", "AABB", "ACCD"); bookMap.put(1, bookStore1); bookMap.put(2, bookStore2); for (Map.Entry<Integer, BookStore> entry:bookMap.entrySet()) { int key = entry.getKey(); Bo...

public class ArrayTest { public static void main(String[] args) { int nmbr[] = {12,13,10,12,22,36}; System.out.println("Numbers Are :"); for(int i =0; i<nmbr.length; i++ ){ System.out.println(nmbr[i]); } System.out.print("\n"); String[] name = {"PORAG","WASIM","SAM","NEWAJ"}; System.out.println("Names Are :"); for(int i = 0; i < name.length; i++){ System.out.println(name[i]); } } }   View Source Code

public class StringSplit { public static void main(String[] args) { String name = "Faisal,Porag"; String[] lists = name.split(","); String firstName = lists[0]; String lastName = lists[1]; System.out.println("First name is : " +firstName); System.out.println("Last name is : "+lastName); } } View Source Code

public class OverLoadingTest { public static void main(String[] args) { Summation summation = new Summation(); summation.add(15, 25); summation.add(25, 45, 32.23); } } class Summation{ int res; public int add(int num1, int num2){ res = num1 + num2; System.out.println("Result is : " +res); return res; } public int add(int num1, int num2, double num3){ res = (num1 + num2) - (num1 + (int) num3); // Casting System.out.println("Result is : " +res); return res; } View Source Code

public class OverridingTest { public static void main(String[] args) { Car car = new Car(); car.speed(); System.out.println("---------- Check ----------"); Bike bike = new Bike(); bike.speed(); } } class Car{ void speed(){ System.out.println("Measure Car Speed ...."); } } class Bike extends Car{ @Override void speed() { // TODO Auto-generated method stub super.speed(); System.out.println("Measure Bike's Speed ...."); } } View Source Code

import java.util.ArrayList; import java.util.Iterator; public class CollectionTest { public static void main(String[] args) { ArrayList<String> name = new ArrayList<>(); name.add("PORAG"); name.add("FAISAL"); name.add("WASIM"); name.add("SAM"); name.add("SHUVO"); System.out.println("---- 1st Way -----"); for(String obj:name){ System.out.println(obj); } System.out.println("---- 2nd Way -----"); Iterator<String> iterator = name.iterator(); while(iterator.hasNext()){ System.out.println(iterator.next()); } } } View Source Code

public class HelloJava { public static void main(String[] args) { Name name = new Name(); name.getName("FAISAL PORAG"); } } class Name{ public String getName(String name){ System.out.println(name); return name; } } View Source Code