HashMap in Java

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();
BookStore bookStore = entry.getValue();
System.out.println(key +" Details: ");
System.out.println(bookStore.bookId+" "+bookStore.bookName+" "+bookStore.author+" "
+bookStore.publisher+" "+bookStore.quantity);

}


}
}

View Source Code

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StringTokenizer in Java

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
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