prameshbhattarai’s gists

prameshbhattarai / S3MultipartUpload.java

Last active July 2, 2024 18:55

Uploading InputStream to AWS S3 without Content-Length using Multipart Upload - JAVA

	import com.amazonaws.regions.Regions;
	import com.amazonaws.services.s3.AmazonS3;
	import com.amazonaws.services.s3.AmazonS3ClientBuilder;
	import com.amazonaws.services.s3.internal.Constants;
	import com.amazonaws.services.s3.model.*;
	import lombok.extern.log4j.Log4j2;

	import java.io.ByteArrayInputStream;
	import java.io.ByteArrayOutputStream;
	import java.io.InputStream;

prameshbhattarai / SubmitTask.java

Last active October 30, 2019 08:42

Executor Service: Submit method

	public class SubmitTask {

	private static final int DEFAULT_THREAD_COUNT = 4; // default number of threads
	private final ThreadPoolExecutor executorService;

	public SubmitTask() {
	this.executorService = (ThreadPoolExecutor) Executors.newFixedThreadPool(DEFAULT_THREAD_COUNT);
	}

	// if we only submit task to executor service then our thread pool will not closed

prameshbhattarai / ExecuteTask.java

Last active October 30, 2019 08:42

Executor Service: Execute Method

	package com.litmus;

	import java.util.ArrayList;
	import java.util.List;
	import java.util.concurrent.Executors;
	import java.util.concurrent.ThreadPoolExecutor;
	import java.util.concurrent.TimeUnit;

	/**
	* @author pramesh-bhattarai

prameshbhattarai / Area.java

Created October 9, 2019 11:55

Area of two intersected rectangle.

	public class AreaOfRectangle {

	public static long area(int length, int breadth) {
	return Math.abs(length * breadth);
	}

	public static boolean isOverlapped(int K, int L, int M, int N,
	int X, int Y) {
	return K < X && X < M && L < Y && Y < N;
	}

prameshbhattarai / build.gradle

Created July 24, 2019 06:46

creating jar file with dependencies in gradle

	// creating jar file with all dependencies
	jar {
	manifest {
	attributes "Main-Class": "PATH_TO_MAIN_CLASS"
	}

	from {
	// filters only existing and non-empty dirs
	sourceSets.main.runtimeClasspath
	.filter { (it.isDirectory() && it.listFiles().length > 0) \|\| it.isFile() }

prameshbhattarai / high-order-function.js

Created October 15, 2018 06:22

high order function in javascript

	/*
	* Chaining of map() and reduce() function
	*/
	(function() {
	"use strict"
	const object = [{id: 1, name: "normal object1"}, {id: 2, name: "normal object2"}, {id: 3, name: "normal object3"}]
	const providers = [];

	object.map(mapToProviderObject)
	.reduce(pushFilteredProviders, providers);

prameshbhattarai / deep-object-select.js

Created October 15, 2018 06:20

search object in JSON object in javascript

	(function() {
	"use strict";

	function searchByKeyPath(object, keys) {
	var deep = keys.split("."), obj = null;
	for(var i = 0; i < deep.length; i++) {
	(obj == null) ? obj = '' + deep[i] : obj = obj + '.' + deep[i];
	if((eval(obj) === null \|\| eval(obj) === undefined) && (i !== deep.length-1)) {
	var beforeNotFoundFrom = obj.substring(0, obj.lastIndexOf('.'));
	throw "Object not found from " + obj;

prameshbhattarai / parse-link.js

Created October 15, 2018 06:18

parse link for pagination in javascript

	/* parse link for pagination */
	(function() {
	'use strict';
	function parseLink(link, api) {
	if(link === null) return;

	var split = link.match(/<?([^>])>(.)/);
	var api = split[1].substring(split[1].indexOf(api), split[1].length);
	var rel = split[2].match( /"(.*?)"/ )[1];

prameshbhattarai / Callback.java

Created September 17, 2018 10:20

example of calling async callback function in java --fun--

	package com.callback.fun;

	import java.util.function.Consumer;

	public class Callback {

	private static final double salary = 75_000;

	private static void getSalary(Consumer<Double> callback) {
	System.out.println("get salary invoked");

prameshbhattarai / callback.js

Created September 10, 2018 11:20

example for how javascript callback works .....

pramesh bhattarai prameshbhattarai