INNOVATION BRINGS SUCCESS

Friday, 22 December 2017

import java.io.ByteArrayInputStream;
import java.io.File;
import java.io.InputStream;
import java.util.List;
import com.amazonaws.auth.AWSCredentials;
import com.amazonaws.auth.BasicAWSCredentials;
import com.amazonaws.services.s3.AmazonS3;
import com.amazonaws.services.s3.AmazonS3Client;
import com.amazonaws.services.s3.model.Bucket;
import com.amazonaws.services.s3.model.CannedAccessControlList;
import com.amazonaws.services.s3.model.ObjectMetadata;
import com.amazonaws.services.s3.model.PutObjectRequest;
import com.amazonaws.services.s3.model.S3ObjectSummary;
public class AmazonS3Example {

private static final String SUFFIX = "/";

public static void main(String[] args) {
// credentials object identifying user for authentication
// user must have AWSConnector and AmazonS3FullAccess for
// this example to work
AWSCredentials credentials = new BasicAWSCredentials("AKIAJKQUCPNKR7SMLKHA", "fqt2QoaJSy4xE95lk+d29MoilYDk1MZj+Wjny7Qk");

// create a client connection based on credentials
AmazonS3 s3client = new AmazonS3Client(credentials);

// create bucket - name must be unique for all S3 users
String bucketName = "uploads.cdn.placester.net";
s3client.createBucket(bucketName);

// list buckets
for (Bucket bucket : s3client.listBuckets()) {
System.out.println(" - " + bucket.getName());
}

// create folder into bucket
String folderName = "testfolder";
createFolder(bucketName, folderName, s3client);

// upload file to folder and set it to public
String fileName = folderName + SUFFIX + "build.xml";
s3client.putObject(new PutObjectRequest(bucketName, fileName,
new File("E:\\jets jar\\jets3t-0.9.4\\build.xml"))
.withCannedAcl(CannedAccessControlList.PublicRead));

deleteFolder(bucketName, folderName, s3client);

// deletes bucket
s3client.deleteBucket(bucketName);
}

public static void createFolder(String bucketName, String folderName, AmazonS3 client) {
// create meta-data for your folder and set content-length to 0
ObjectMetadata metadata = new ObjectMetadata();
metadata.setContentLength(0);
// create empty content
InputStream emptyContent = new ByteArrayInputStream(new byte[0]);
// create a PutObjectRequest passing the folder name suffixed by /
PutObjectRequest putObjectRequest = new PutObjectRequest(bucketName,
folderName + SUFFIX, emptyContent, metadata);
// send request to S3 to create folder
client.putObject(putObjectRequest);
}
/**
* This method first deletes all the files in given folder and than the
* folder itself
*/
public static void deleteFolder(String bucketName, String folderName, AmazonS3 client) {
List fileList =
client.listObjects(bucketName, folderName).getObjectSummaries();
for (S3ObjectSummary file : fileList) {
client.deleteObject(bucketName, file.getKey());
}
client.deleteObject(bucketName, folderName);
}
}

Thursday, 21 December 2017

Comparable and Comparator in Java

// Example of Comparable in collection

import java.util.ArrayList;
import java.util.Collections;

public class ArrayList3 {
public static void main(String as[]) {
ArrayList<Student1> al = new ArrayList<>();
al.add(new Student1(1,"vcd","dvrns"));
al.add(new Student1(10,"avcd","avrns"));
al.add(new Student1(3,"gvcd","cvrns"));
al.add(new Student1(12,"cvcd","vrns"));
System.out.println("Before Sorting");
for(Student1 s: al) {
System.out.println(s.rn+" "+s.name+" "+s.addr);
}
System.out.println("After Sorting");
Collections.sort(al);
for(Student1 s: al) {
System.out.println(s.rn+" "+s.name+" "+s.addr);
}
}
}

class Student1 implements Comparable<Student1> {
int rn;
String name;
String addr;
Student1(int a, String b, String c){
rn = a;
name = b;
addr = c;
}
@Override
public int compareTo(Student1 o) {
if(o.rn > rn)
return 1;
return -1;
}
}

// Example of Comparator in collection

import java.util.ArrayList;
import java.util.Collections;
import java.util.Comparator;

public class ArrayList4 {
@SuppressWarnings("unchecked")
public static void main(String as[]) {
ArrayList<Student4> al = new ArrayList<>();
al.add(new Student4(1,"vcd","dvrns"));
al.add(new Student4(10,"avcd","avrns"));
al.add(new Student4(3,"gvcd","cvrns"));
al.add(new Student4(12,"cvcd","vrns"));
System.out.println("Before Sorting");
for(Student4 s: al) {
System.out.println(s.rn+" "+s.name+" "+s.addr);
}
System.out.println("rn Sorting");
Collections.sort(al, new rnCompare());
for(Student4 s: al) {
System.out.println(s.rn+" "+s.name+" "+s.addr);
}

System.out.println("name Sorting");
Collections.sort(al, new nameCompare());
for(Student4 s: al) {
System.out.println(s.rn+" "+s.name+" "+s.addr);
}
}
}

class Student4 {
int rn;
String name;
String addr;

public Student4(int a, String n, String b) {
rn = a;
name = n;
addr = b;
}

}

class rnCompare implements Comparator {
public int compare(Object o1, Object o2) {
Student4 s1 = (Student4)o1;
Student4 s2 = (Student4)o2;
if(s1.rn > s2.rn)
return 1;
return -1;
}
}

class nameCompare implements Comparator {
public int compare(Object o1, Object o2) {
Student4 s1 = (Student4)o1;
Student4 s2 = (Student4)o2;
return s1.name.compareTo(s2.name);
}
}

Heartily birthday wishes to Shri L. K. Advani sir - From: Sevapuri Vidhan Sabha Chhetra

Shri Laxmishankar Dubey & Prakash Dubey with Mananiya Shri Amar Singh Ji,

Pt. Laxmishankar Dubey (Sevapuri - Bhishampur) With L.K Advani Ji.

Mananiya Shri LK Advani's Bday


Prakash Dubey (Bhishampur - Sevapuri) in Birthday celebration of Respected Shri L. K. Advani Ji.

INNOVATION BRINGS SUCCESS

Friday, 22 December 2017