the ggts cant import the spring source code - spring

I want to read and learn Spring's source code, but I cant import the gradle project after I download the source cdoe.
Here is the error message
enter image description here
can anybody help me?

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SunCertPathBuilderException : unable to find valid certification path to requested target but different issue

I am trying to import a gradle project and when I try to create a Spring starter project in Spring tool suite (STS 4), I see this error.
I looked online and have added the certs for both start.spring.io and services.gradle.org but I still see the error. Could anyone help me figure this out as to what else am I missing?

adding Apache Commons Lang3 to my Spring Boot project

I am doing a Spring Boot exercise from Baeldung.com. The project has a test class that uses the method randomAlphabetic, which I have traced back to RandomStringUtils, which in turn belongs to Lang3 from Apache Commons. I can't seem to add the import of RandomStringUtils or even Lang3 itself to my project.
I have looked at the import on the GitHub repository for the project. The project is done as a Maven project, but I have done mine as a Gradle project, because Gradle is what I use at work (I don't know Maven). I have added the following to my build.gradle file:
plugins {
id 'org.apache.commons'
}
dependencies {
implementation 'org.apache.commons:commons-lang3:3.12.0'
}
I have attempted the following import statements:
import org.apache.commons.lang3.RandomStringUtils;
import org.apache.commons.lang3.*;
When I am writing my import statement and I put the period after commons, the autocomplete only comes up with two choices: logging and logging.impl . I do not even have an option to add lang3. I have also checked in the Spring Initializer to see if I could add lang3 there, but I cannot.
I have downloaded lang3 onto my computer. It contains 5 JAR files plus a lot of other material that I don't know how to use. I thought I could move those JAR files into my Project and External Dependencies 'folder,' but I can't find any way to do so. I'm using Spring Tools 4 Suite for Eclipse, btw.
Any help is appreciated.

unable to find gradle dependency for zephyr -ZFJCloudRestClient

I am new to ZAPI and generating the JWT token through java code for authentication.
I got the code for generate JWT token from :https://github.com/zephyrdeveloper/zapi-cloud/blob/master/Samples/src/com/thed/zapi/cloud/sample/sampleJwtGenerator.java
i was not able to resolve couple of imports
import com.thed.zephyr.cloud.rest.ZFJCloudRestClient;
import com.thed.zephyr.cloud.rest.client.JwtGenerator;
Can someone pleasse help me which gradle dependencies do i need use to get use to get this resolved.
Thanks
I download the jar from here which solved my issue: https://github.com/jenkinsci/zephyr-for-jira-test-management-plugin/blob/master/src/main/resources/zfj-cloud-rest-client-3.0.jar

The import org.springframework.http.ContentCodingType cannot be resolved

I am trying to import Spring ContentCodingType class in my code.I have included the below dependency in my pom.xml.but still it is not resolving and getting compilation error while doing maven clean install.
Any one please suggest what is the problem here.
spring-webmvc - 4.3.3.RELEASE
You need Spring for Android, specifically spring-android-rest-template because that's where that class lives.

Ant replace token - Gradle

I am trying to understand a multi-build spring boot project. In one of the sub project it has a build.gradle file, and the first line is:
import org.apache.tools.ant.filters.ReplaceTokens
From what I read on Google, I understand this is to replace some ant property files, however I'm unable to find any more information. Can someone please help me understand how this works and what it does?
Thank you!
This line by itself doesn't do anything. It is just telling gradle/java to import the class ReplaceTokens for later use in the build script. If you look through the file, you'll likely find where they're actually using it.
If you can post more of the build.gradle file, I/someone will be able to help more.
And you're right, this class is used to do find and replaces in other files.

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