wombat

// Create new configuration that specifies the error correction
Map<EncodeHintType, ErrorCorrectionLevel> hints = new HashMap<EncodeHintType, ErrorCorrectionLevel>();
hints.put(EncodeHintType.ERROR_CORRECTION, ErrorCorrectionLevel.H);

QRCodeWriter writer = new QRCodeWriter();
BitMatrix bitMatrix = null;
ByteArrayOutputStream baos = new ByteArrayOutputStream();

try {
    // Create a qr code with the url as content and a size of 250x250 px

spalladino

# Backup
docker exec CONTAINER /usr/bin/mysqldump -u root --password=root DATABASE > backup.sql

# Restore
cat backup.sql | docker exec -i CONTAINER /usr/bin/mysql -u root --password=root DATABASE

udacityandroid

// Find the View that shows the numbers category
TextView numbers = (TextView) findViewById(R.id.numbers);

// Set a click listener on that View
numbers.setOnClickListener(new View.OnClickListener() {
   // The code in this method will be executed when the numbers View is clicked on.
   @Override
   public void onClick(View view) {
       Intent numbersIntent = new Intent(MainActivity.this, NumbersActivity.class);
       startActivity(numbersIntent);

ekswai

import org.junit.Test;
import org.junit.runner.RunWith;
import org.master.Application;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.boot.test.IntegrationTest;
import org.springframework.boot.test.SpringApplicationConfiguration;
import org.springframework.http.converter.json.MappingJackson2HttpMessageConverter;
import org.springframework.security.oauth2.client.DefaultOAuth2ClientContext;
import org.springframework.security.oauth2.client.OAuth2RestTemplate;
import org.springframework.security.oauth2.client.token.grant.client.ClientCredentialsResourceDetails;

DevoKun

Kafka Distributed Streaming Platform

Publish and Subscribe / Process / Store

Start Kafka

• Kafka uses ZooKeeper as a distributed backend.

Start Zookeeper

thomasdarimont

package demo;

import java.io.Serializable;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashMap;
import java.util.HashSet;
import java.util.LinkedHashMap;
import java.util.List;

mainul35-bs23

Background story

It is a common scenario that we often forget out database password. When we try to log in to our mysql DB, we face the following error message. If we use a password:

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: YES)

If we don't use a password:

ERROR 1045 (28000): Access denied for user 'root'@'localhost' (using password: NO)

simantaturja

Core Java

Chapter 0 : Fundamentals

1. Data Types and Variables - https://www.baeldung.com/java-primitives
2. Access Modifiers - https://www.baeldung.com/java-access-modifiers
3. If-Else
   1. https://www.baeldung.com/java-control-structures
   2. https://www.baeldung.com/java-using-not-in-if-conditions
   3. Switch Case - https://www.baeldung.com/java-switch
4. Loops - https://www.baeldung.com/java-loops
5. OOP Concepts - https://www.baeldung.com/java-oop

Sadmansamee

Project Generator

• https://github.com/VeryGoodOpenSource/very_good_cli (It will nicely genearate a project with all the basic setup, but with bloc state management, you can simply replace with any other state management library)

State Management

Riverpod or Bloc

• RiverPod: https://pub.dev/packages/riverpod
• Bloc: https://pub.dev/packages/flutter_bloc

Service Locator

iolufemi

# Licensed to the Apache Software Foundation (ASF) under one
# or more contributor license agreements. See the NOTICE file
# distributed with this work for additional information
# regarding copyright ownership. The ASF licenses this file
# to you under the Apache License, Version 2.0 (the
# "License"); you may not use this file except in compliance
# with the License. You may obtain a copy of the License at
#
# http://www.apache.org/licenses/LICENSE-2.0
#