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@javahonk
Eclipse increase Project explorer and Java class font
Eclipse increase Project explorer and Java class font
I was looking to increase Project explorer and Java class font and googling multiple suggestion and spent almost one hours without any concrete solution although it was pretty easy as eclipse provide it. I had done many time but keep forgetting every time if comes back a while. So I documented below for everybody reference: How to increate java class font:
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PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target Sprig Tools
PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target Sprig Tools
I was getting below error while setting up Spring Tool project after a while. java.lang.RuntimeException: javax.net.ssl.SSLHandshakeException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target at org.springsource.ide.eclipse.commons.livexp.util.ExceptionUtil.unchecked(ExceptionUtil.java:165) at…
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thread1 SyntaxError missing after property
thread1 SyntaxError missing after property
thread1 SyntaxError missing after property – E QUERY thread1 SyntaxError missing after property id @ shell 1 60 – E QUERY [thread1] SyntaxError: missing : after property id @(shell):1:60 — If you are using Mongo DB and using its shell to insert collection and getting below exception:
2020-03-13T07:09:00.448+0200 E QUERY [thread1] SyntaxError: missing : after property id @(shell):1:184
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Convert Optional String to String
Convert Optional String to String
Convert Optional String to String – If you are using Java 8 trying to find to convert Convert Optional<String> to String value then you can use below code:
import java.util.ArrayList; import java.util.List; import java.util.Objects; import java.util.Optional; public class ConvertOptionalToString { public static void main(String[] args) { List stringList = new…
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Failed to load class org slf4j impl StaticLoggerBinder
Failed to load class org slf4j impl StaticLoggerBinder – If you are getting below exception:
SLF4J: Failed to load class “org.slf4j.impl.StaticLoggerBinder”. SLF4J: Defaulting to no-operation (NOP) logger implementation SLF4J: See http://www.slf4j.org/codes.html#StaticLoggerBinder for further details. OutputPojo{named=’JavaHonk’, aged=30, cityd=’Edison’, partyNamed=’JavaHonk’, partyIdd=5,…
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Write Annotated Class FixedLength BeanIO
Write Annotated Class FixedLength BeanIO
Write Annotated Class FixedLength BeanIO – In this example we will see to to write FixedLenght data into file using Java with Annotation. Most people use XML file for mapping which is very tedious as you will have to main separate file for it. To make it to write very simple I will be using class with annotation which provide sample functionality as XML:
Note: We will use BeanIO to accomplish…
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Spring Boot HTTPS Application
Spring Boot HTTPS Application
Spring Boot HTTPS Application – Spring Boot is very powerful and easy to create stand-alone, production ready Spring application can be just configured and run. Some of its feature is:
Quickly you can created stand-alone application
Its embedded with Jetty, Tomcat which can be just run no need to create WAR file and deploy on tomcat or any application server
Its automatically add third…
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Clone Git Remote Project Locally InteilliJ
Clone Git Remote Project Locally InteilliJ
Clone Git Remote Project Locally InteilliJ – Here you will see how to clone existing project from Git repository. We will Javahonk.com git repo which is public by default so for your test you can utilize this site:
1. Go to: https://github.com/javahonk?tab=repositories and here I have create sample blank project with only one default file called: README.md https://github.com/javahonk/BeanIOFi…
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Convert regular project into Maven project IntelliJ
Convert regular project into Maven project IntelliJ
Convert regular project into Maven project IntelliJ – Here we will see how to convert regular project into maven project.
1.Open the any existing or new project below is example of Java project then right click of the project and select Add Framework Support
2.Once dialog box opens select maven options on the left and click OK
3.IntelliJ adds default pom.xml file to the project and…
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Maven groupId and artifactId naming
Maven groupId and artifactId naming
Maven groupId and artifactId naming – If you are creating new project with Maven then very first thing you will have to is decide groupId, artifactId and version. Before doing this you will have to understand three attribute:
Example pom.xml
4.0.0 com.javahonk.beanio beaniofixedlength 1.0-SNAPSHOT
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Java Map Keep Insertion Order
Java Map Keep Insertion Order
Java Map Keep Insertion Order – If you are looking to do implementation of Map using java where ordering of the object needs to be preserved then map is not a right option as this class does not makes any guarantees of the order of the object.
I will suggest to use LinkedHashMap or TreeMap.
LinkedHashMap keeps keys in the order the way it was inserted and on the other hand TreeMapalso…
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Configure Tomcat Server IntelliJ
Configure Tomcat Server IntelliJ
Last tutorial we saw how to create Maven web application project in IntelliJ. Here we will run Maven Web Application on Tomcat server. First we will have to configure tomcat server into IntelliJ. Please follow the step below:
1. Download Tomcat from here: https://tomcat.apache.org/download-90.cgi and you will have to choose latest version as I have choose latest version of Tocmat 9.0.31
2…
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Create Maven Project IntelliJ
Create Maven Project IntelliJ
Create Maven Project IntelliJ – IntelliJ Idea comes with fully integrated with Maven with default version which will help your project to coanfiure and automate build process. In IntelliJ you can easily create maven java project or you can open sync with existing project OR add maven to any existing project. Maven can also be configure and manage multi level project. Here we are starting with…
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Create test class Intellij
Create test class Intellij - For any Java class unit testing is very important to make sure whatever business functionality is added into...
Create test class Intellij – For any Java class unit testing is very important to make sure whatever business functionality is added into class is working properly or not. For those who came from Eclipse IDE and just started using IntelliJ for the first time and want to add unit test class please follow steps below:
Open the java class in editor below:
Select the class name and press…
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Test
Contribute test
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Geometry point in rectangle using Java Programming
Geometry point in rectangle using Java Programming
Write a program that prompts the user to enter a point (x, y) and checks whether the point is within the rectangle centered at (0, 0) with width 10 and height 5. For example, (2, 2) is inside the rectangle and (6, 4) is outside the rectangle.
Sample 1: Enter a point with two coordinates: 2 2 Point (2.0, 2.0) is in the rectangle
Sample 2: Enter a point with two coordinates: 6 4 Point (6.0,…
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How Compute tax using Java
How Compute tax using Java program - In this program you will see how to compute tax using basic java programming. This is for beginner who is learning java language and try to understand how java program low works.
In this tutorial we will write sample program to calculate federal personal income tax based on filing status and taxable income.
There are four filing statuses:
Single filers Married filing jointly Married filing separately Head of household.
The tax rates vary every year. Shown in below table
import java.util.Scanner; public class CalculateTax { public static void main(String[]…
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