update

Author: kevinobama

src/kevinGates/CalendarExample.java

@@ -0,0 +1,64 @@
+package kevinGates;
+
+import java.text.DateFormat;
+import java.text.SimpleDateFormat;
+import java.util.Calendar;
+import java.util.Date;
+import java.util.List;
+import java.util.Map;
+
+public class CalendarExample {
+
+    private static final DateFormat dateFormatMinute = new SimpleDateFormat("HH:mm");
+    
+	public static void main(String[] args) {
+//		int currentMinute = getCurrentMinute();
+//				
+//		int i=currentMinute-15;
+//		
+//		while(i<1440) {
+//			  String each15Minutes = getDateTimePlusMinute(-i);
+//			  System.out.print(each15Minutes+"  ");
+//			  i=i+15;
+//		}
+
+		ArrayList minutesArray = new ArrayList();
+		int currentMinute = getCurrentMinute();
+
+		int k=currentMinute-15;
+
+		while(k<1440) {
+			String each15Minutes = getDateTimePlusMinute(-k);
+			minutesArray.add(each15Minutes);
+
+			k = k + 15;
+		}
+		Collections.reverse(minutesArray);
+		//Map<String, ArrayList> mapMinutes = new HashMap<String, ArrayList>();
+		//mapMinutes.put("minutes", minutesArray);
+		
+		//return mapMinutes;		
+		
+	}
+
+    public static String getDateTimePlusMinute(int minutes) {
+    	
+        Date currentDate = new Date();
+
+        Calendar calendar = Calendar.getInstance();
+        calendar.setTime(currentDate);
+
+        calendar.add(Calendar.MINUTE, minutes);
+
+        return dateFormatMinute.format(calendar.getTime());
+    }	
+    
+    public static int getCurrentMinute() {    	
+        Date currentDate = new Date();
+
+        Calendar calendar = Calendar.getInstance();
+        calendar.setTime(currentDate);
+       
+        return calendar.get(Calendar.MINUTE);
+    }
+}

src/kevinGates/DataType.java

@@ -0,0 +1,30 @@
+package kevinGates;
+
+import java.text.DecimalFormat;
+import java.util.Random;
+
+public class DataType {
+	
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+		double qyt = 0.0000000389283283;
+		double qytOne = 800.0000000389283283;
+		
+		System.out.println(qyt);
+ 		
+		DecimalFormat decimalFormat = new DecimalFormat("#.########");
+		System.out.println(decimalFormat.format(qyt));  
+		System.out.println(decimalFormat.format(qytOne));
+
+        Random random = new Random();
+
+        // create a big random number - maximum is ffffff (hex) = 16777215 (dez)
+        
+        // format it as hexadecimal string (with hashtag and leading zeros)
+        String colorCode = String.format("#%06x", random.nextInt(256*256*256));
+
+        // print it
+        System.out.println(colorCode);
+         
+	}
+}

src/kevinGates/HashMap.java

@@ -0,0 +1,16 @@
+package kevinGates;
+
+import java.util.*;
+
+public class HashMap {
+
+   public static void main(String args[]) {
+//	   Map<Integer, String> hm = new HashMap<Integer, String>();
+//	   
+//	   //HashMap<Integer,String> hm=new HashMap<Integer,String>();  
+//	   hm.put(100,"Amit");  
+//	   hm.put(101,"Vijay");  
+//	   hm.put(102,"Rahul"); 
+	   	   
+   }
+}

src/kevinGates/HttpURLConnectionExample.java

@@ -0,0 +1,75 @@
+package kevinGates;
+
+import java.io.BufferedReader;
+import java.io.DataOutputStream;
+import java.io.InputStreamReader;
+import java.net.HttpURLConnection;
+import java.net.URL;
+
+import javax.net.ssl.HttpsURLConnection;
+
+public class HttpURLConnectionExample {
+
+	private final String USER_AGENT = "Mozilla/5.0";
+
+	public static void main(String[] args) throws Exception {
+
+		HttpURLConnectionExample http = new HttpURLConnectionExample();
+		
+		String url = "https://api.coinmarketcap.com/v2/ticker/1/";
+		String data= http.httpGet(url);
+		System.out.println(data);
+	}
+
+	private String httpGet(String apiUrl) throws Exception {		
+		URL url = new URL(apiUrl);
+		HttpURLConnection request = (HttpURLConnection) url.openConnection();
+
+		request.setRequestMethod("GET");
+	
+		BufferedReader in = new BufferedReader(new InputStreamReader(request.getInputStream()));
+		
+		String inputLine;
+		StringBuffer response = new StringBuffer();
+
+		while ((inputLine = in.readLine()) != null) {
+			response.append(inputLine);
+		}
+		in.close();
+		
+		return response.toString();
+	}	
+	
+	// HTTP GET request
+	private void sendGetOne() throws Exception {
+		//https://api.coinmarketcap.com/v2/ticker/1/
+		String url = "https://api.coinmarketcap.com/v2/ticker/1/";
+		
+		URL obj = new URL(url);
+		HttpURLConnection con = (HttpURLConnection) obj.openConnection();
+
+		// optional default is GET
+		con.setRequestMethod("GET");
+
+		//add request header
+		con.setRequestProperty("User-Agent", USER_AGENT);
+
+		int responseCode = con.getResponseCode();
+		System.out.println("\nSending 'GET' request to URL : " + url);
+		System.out.println("Response Code : " + responseCode);
+
+		BufferedReader in = new BufferedReader(
+		        new InputStreamReader(con.getInputStream()));
+		String inputLine;
+		StringBuffer response = new StringBuffer();
+
+		while ((inputLine = in.readLine()) != null) {
+			response.append(inputLine);
+		}
+		in.close();
+
+		//print result
+		System.out.println(response.toString());
+	}
+
+}

src/kevinGates/ListExample.java

@@ -0,0 +1,34 @@
+package kevinGates;
+
+import java.util.*;  
+class Book {  
+	int id;  
+	String name,author,publisher;  
+	int quantity;  
+	public Book(int id, String name, String author, String publisher, int quantity) {  
+	    this.id = id;  
+	    this.name = name;  
+	    this.author = author;  
+	    this.publisher = publisher;  
+	    this.quantity = quantity;  
+	}  
+}  
+
+public class ListExample {
+	public static void main(String[] args) {
+		//Creating list of Books  
+	    List<Book> books=new ArrayList<Book>();  
+	    //Creating Books  
+	    Book b1=new Book(101,"kevin gates","Yashwant Kanetkar","BPB",8);  
+	    Book b2=new Book(102,"bill gates","Forouzan","Mc Graw Hill",4);  
+	    Book b3=new Book(103,"obama","Galvin","Wiley",6);  
+	    //Adding Books to list  
+	    books.add(b1);  
+	    books.add(b2);  
+	    books.add(b3);  
+ 
+	    for(Book book:books) {  
+	    	System.out.println(book.id+" "+book.name+" "+book.author+" "+book.publisher+" "+book.quantity);  
+	    }  		
+	}
+}

src/kevinGates/Md5Example.java

@@ -0,0 +1,35 @@
+package kevinGates;
+
+import java.security.MessageDigest;
+import java.security.NoSuchAlgorithmException;
+
+public class Md5Example {
+
+	public static void main(String[] args) {
+		 
+        System.out.println(md5String("data"));		
+	}
+	
+	public static String md5String(String stringToHash) {		
+        String generatedString = null;
+        try {             
+            MessageDigest md = MessageDigest.getInstance("MD5");
+             
+            md.update(stringToHash.getBytes());
+             
+            byte[] bytes = md.digest();
+ 
+            StringBuilder sb = new StringBuilder();
+            for(int i=0; i< bytes.length ;i++)
+            {
+                sb.append(Integer.toString((bytes[i] & 0xff) + 0x100, 16).substring(1));
+            }
+            
+            generatedString = sb.toString();
+        } catch (NoSuchAlgorithmException e) {
+            e.printStackTrace();
+        }
+        
+        return generatedString;		
+	}		
+}