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pre-receive hook declined while pushing SpringBoot app to heroku

Hi everyone I am trying to push my simple spring boot application over heroku for the first time. I am using Heroku ClI way, everything works fine but at the end I got this error -
! [remote rejected] master -> master (pre-receive hook declined)
error: failed to push some refs to 'https://git.heroku.com/appname.git'
I am using java 16 I have also tried creating system.properties file in the root, and pasted this command java.runtime.version=16.
Still I am getting the same issue.
Here is the heroku logs (just added the last few lines)-
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 2 source files to /tmp/build_fa4e5c6e/target/classes
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 12.625 s
[INFO] Finished at: 2021-08-20T11:31:46Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project PocXmlToJson: Fatal error compiling: invalid target release: 11 -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoExecutionException
! ERROR: Failed to build app with Maven
We're sorry this build is failing! If you can't find the issue in application code,
please submit a ticket so we can help: https://help.heroku.com/
! Push rejected, failed to compile Java app.
! Push failed
Pom.xml
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.5.4</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>PocXmlToJson</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>PocXmlToJson</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>11</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
How can I resolve this issue !

Shippable "Failed to execute goal org.codehaus.mojo:cobertura-maven-plugin:2.7:instrument"

I am currently doing a software engineering module where we learn about CI and TDD. As an assignment we must create a Java project using maven, JUnit, and Shippable. My files include three java classes (Student, Course, and Module classes) and a simple test for each that tests getters and setters.
I am using:
Apache NetBeans 12.0
Maven (default is 3.6.3 but I added a plugin for 3.8)
Openjdk11
My pom file:
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.nuig</groupId>
<artifactId>assignment1</artifactId>
<version>1.0-SNAPSHOT</version>
<packaging>jar</packaging>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<maven.compiler.source>11</maven.compiler.source>
<maven.compiler.target>11</maven.compiler.target>
</properties>
<dependencies>
<!-- https://mvnrepository.com/artifact/joda-time/joda-time -->
<dependency>
<groupId>joda-time</groupId>
<artifactId>joda-time</artifactId>
<version>2.10.6</version>
</dependency>
<!-- https://mvnrepository.com/artifact/org.junit.jupiter/junit-jupiter-api -->
<dependency>
<groupId>org.junit.jupiter</groupId>
<artifactId>junit-jupiter-api</artifactId>
<version>5.7.0</version>
<scope>test</scope>
</dependency>
</dependencies>
<name>assignment1</name>
<build>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.8.0</version>
<configuration>
<release>11</release> <!--or <release>10</release>-->
</configuration>
</plugin>
</plugins>
</build>
</project>
And shippable.yml file:
language: java
jdk:
- openjdk11
after_success:
- mvn clean verify
- mvn clean cobertura:cobertura
- mvn test
When I build the code in netbeans, it builds and passes the tests fine. But once I push and go to shippable console, it keeps failing at mvn clean cobertura:cobertura with the following error:
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 17.165 s
[INFO] Finished at: 2020-10-11T00:26:35Z
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.codehaus.mojo:cobertura-maven-plugin:2.7:instrument (default-cli) on project assignment1: Execution default-cli of goal org.codehaus.mojo:cobertura-maven-plugin:2.7:instrument failed: Plugin org.codehaus.mojo:cobertura-maven-plugin:2.7 or one of its dependencies could not be resolved: Could not find artifact com.sun:tools:jar:0 at specified path /usr/lib/jvm/java-11-openjdk-amd64/../lib/tools.jar -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginResolutionException
I am really unfamiliar with all these technologies and I have already tried several suggestions from answers to similar questions but to no vail.
Would anyone be able to help with this issue? Much appreciated.

Maven Configuration Problem with Version 2.1.7 - Spring Boot

when i am trying to create Spring Boot Project using New Version which is "v 2.1.7"
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
this time its through Following error:
Description Resource Path Location
Type
Unknown pom.xml /demo-1 line 1 Maven Configuration Problem
If i am going to replace This new Version to my previous old version in porm.xml file with name space its Working good without any error,
and if i deleted .m2 folder and reinstall eclipse then its support to new version but i want to use existing eclipse with New version of Spring Boot, what can i do for it.
it is possible to update existing .m2 folder ?
pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 https://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.1.7.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<groupId>com.example</groupId>
<artifactId>demo-1</artifactId>
<version>0.0.1-SNAPSHOT</version>
<name>demo-1</name>
<description>Demo project for Spring Boot</description>
<properties>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-actuator</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
<optional>true</optional>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
when i am trying to install maven this time following error show
[INFO] Scanning for projects...
[INFO]
[INFO] -------------------------< com.example:demo-1 >-------------------------
[INFO] Building demo-1 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO]
[INFO] --- maven-resources-plugin:3.1.0:resources (default-resources) # demo-1 ---
[INFO] Using 'UTF-8' encoding to copy filtered resources.
[INFO] Copying 1 resource
[INFO] Copying 0 resource
[INFO]
[INFO] --- maven-compiler-plugin:3.8.1:compile (default-compile) # demo-1 ---
[INFO] Changes detected - recompiling the module!
[INFO] Compiling 1 source file to D:\Enternship\SPRING BOOT\demo-1\target\classes
[INFO] -------------------------------------------------------------
[ERROR] COMPILATION ERROR :
[INFO] -------------------------------------------------------------
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[INFO] 1 error
[INFO] -------------------------------------------------------------
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 5.933 s
[INFO] Finished at: 2019-09-02T18:45:56+05:30
[INFO] ------------------------------------------------------------------------
[WARNING] The requested profile "pom.xml" could not be activated because it does not exist.
[ERROR] Failed to execute goal org.apache.maven.plugins:maven-compiler-plugin:3.8.1:compile (default-compile) on project demo-1: Compilation failure
[ERROR] No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/MojoFailureException

just configure the JDK path the steps are
right-click on the project
click on properties
type java build path and go to java build path
click on libraries
click on JRE system libraries
edit that
click on alternate JRE
click on Installed JREs
click on Add
select standard VM
click Next
place your JDK path and select that
By this, you will not see the error
=>No compiler is provided in this environment. Perhaps you are running on a JRE rather than a JDK?

i didn't find "import org.springframework.jbdc.core.JsbcTemplate" [duplicate]

This question already has answers here:
Problems using Maven and SSL behind proxy
(25 answers)
Closed 4 years ago.
i was searching for an hour to find a solution to my problem and i i'm using maven to pom.xml to find the library of this import org.springframework.jdbc.core.JdbcTemplate
my pom.xml
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0"
xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>org.sample</groupId>
<artifactId>test1</artifactId>
<name> Spring boots test</name>
<version>0.0.2-SNAPSHOT</version>
<dependencies>
<!-- https://mvnrepository.com/artifact/org.springframework.boot/spring-boot-starter -->
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter</artifactId>
<version>2.0.5.RELEASE</version>
</dependency>
<dependency>
<groupId>org.springframework</groupId>
<artifactId>spring-jdbc</artifactId>
<version>3.2.1.RELEASE</version>
</dependency>
</dependencies>
<properties>
<maven.compiler.source>1.8</maven.compiler.source>
<maven.compiler.target>1.8</maven.compiler.target>
<java.version>1.8</java.version>
</properties>
</project>
the result was :-
[INFO] Scanning for projects...
[INFO]
[INFO] --------------------------< org.sample:test1 >--------------------------
[INFO] Building Spring boots test 0.0.2-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[INFO] Downloading from central: https://repo.maven.apache.org/maven2/org/springframework/spring-jdbc/3.2.1.RELEASE/spring-jdbc-3.2.1.RELEASE.pom
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 1.626 s
[INFO] Finished at: 2018-10-21T08:41:16+03:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal on project test1: Could not resolve dependencies for project org.sample:test1:jar:0.0.2-SNAPSHOT: Failed to collect dependencies at org.springframework:spring-jdbc:jar:3.2.1.RELEASE: Failed to read artifact descriptor for org.springframework:spring-jdbc:jar:3.2.1.RELEASE: Could not transfer artifact org.springframework:spring-jdbc:pom:3.2.1.RELEASE from/to central (https://repo.maven.apache.org/maven2): sun.security.validator.ValidatorException: PKIX path building failed: sun.security.provider.certpath.SunCertPathBuilderException: unable to find valid certification path to requested target -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/DependencyResolutionException

Mate, There are multiple things that you can do.
Check the maven repository for the jar of spring-boot-starter under org > springframework > boot
Sometimes the download might be interrupted or may be due to failure it would not have downloaded correctly, in that case delete the spring-boot-starter under org > springframework > boot and build again
You can clean and verify the maven project again (I would suggest to do this from the console, to do this go to the folder where your pom.xml exist and execute mvn clean verify)

sonarqube: scan a project from maven: get StringUtils error

I've installed sonarqube on localhost (via docker) and try to scan my maven project with the command below :
mvn sonar:sonar -Dsonar.host.url=http://localhost:32768 -Dsonar.login=27948f763e39322e99a8508c38a28385c22b57f8 -e
But it failed after few seconds :
[INFO] Scanning for projects...
[WARNING] The POM for org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 is missing, no dependency information available
[WARNING] Failed to retrieve plugin descriptor for org.eclipse.m2e:lifecycle-mapping:1.0.0: Plugin org.eclipse.m2e:lifecycle-mapping:1.0.0 or one of its dependencies could not be resolved: Failure to find org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
[INFO]
[INFO] --------------------------< com.example:demo >--------------------------
[INFO] Building demo 0.0.1-SNAPSHOT
[INFO] --------------------------------[ jar ]---------------------------------
[WARNING] The POM for org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 is missing, no dependency information available
[WARNING] Failed to retrieve plugin descriptor for org.eclipse.m2e:lifecycle-mapping:1.0.0: Plugin org.eclipse.m2e:lifecycle-mapping:1.0.0 or one of its dependencies could not be resolved: Failure to find org.eclipse.m2e:lifecycle-mapping:jar:1.0.0 in https://repo.maven.apache.org/maven2 was cached in the local repository, resolution will not be reattempted until the update interval of central has elapsed or updates are forced
[INFO]
[INFO] --- sonar-maven-plugin:3.4.0.905:sonar (default-cli) # demo ---
[INFO] User cache: /Users/johann/.sonar/cache
[INFO] SonarQube version: 7.1.0
[INFO] ------------------------------------------------------------------------
[INFO] BUILD FAILURE
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 2.620 s
[INFO] Finished at: 2018-05-10T10:20:30+09:00
[INFO] ------------------------------------------------------------------------
[ERROR] Failed to execute goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.4.0.905:sonar (default-cli) on project demo: Execution default-cli of goal org.sonarsource.scanner.maven:sonar-maven-plugin:3.4.0.905:sonar failed: A required class was missing while executing org.sonarsource.scanner.maven:sonar-maven-plugin:3.4.0.905:sonar: org/apache/commons/lang/StringUtils
[ERROR] -----------------------------------------------------
[ERROR] realm = plugin>org.codehaus.mojo:sonar-maven-plugin:3.4.0.905
[ERROR] strategy = org.codehaus.plexus.classworlds.strategy.SelfFirstStrategy
[ERROR] urls[0] = file:/Users/johann/.m2/repository/org/sonarsource/scanner/maven/sonar-maven-plugin/3.4.0.905/sonar-maven-plugin-3.4.0.905.jar
[ERROR] urls[1] = file:/Users/johann/.m2/repository/org/sonatype/plexus/plexus-sec-dispatcher/1.4/plexus-sec-dispatcher-1.4.jar
[ERROR] urls[2] = file:/Users/johann/.m2/repository/org/sonatype/plexus/plexus-cipher/1.4/plexus-cipher-1.4.jar
[ERROR] urls[3] = file:/Users/johann/.m2/repository/org/codehaus/plexus/plexus-utils/3.0.22/plexus-utils-3.0.22.jar
[ERROR] urls[4] = file:/Users/johann/.m2/repository/org/sonarsource/scanner/api/sonar-scanner-api/2.10.0.1189/sonar-scanner-api-2.10.0.1189.jar
[ERROR] urls[5] = file:/Users/johann/.m2/repository/commons-lang/commons-lang/2.6/commons-lang-2.6.jar
[ERROR] Number of foreign imports: 1
[ERROR] import: Entry[import from realm ClassRealm[maven.api, parent: null]]
[ERROR]
[ERROR] -----------------------------------------------------
[ERROR] : org.apache.commons.lang.StringUtils
[ERROR] -> [Help 1]
[ERROR]
[ERROR] To see the full stack trace of the errors, re-run Maven with the -e switch.
[ERROR] Re-run Maven using the -X switch to enable full debug logging.
[ERROR]
[ERROR] For more information about the errors and possible solutions, please read the following articles:
[ERROR] [Help 1] http://cwiki.apache.org/confluence/display/MAVEN/PluginContainerException
My Java project is working well and sonarqube seems also to be ok.
I will appreciate your help...
Thanks
--
edit
As requested, here is my pom.xml :
<?xml version="1.0" encoding="UTF-8"?>
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<groupId>com.example</groupId>
<artifactId>demo</artifactId>
<version>0.0.1-SNAPSHOT</version>
<packaging>jar</packaging>
<name>demo</name>
<description>Demo project for Spring Boot</description>
<parent>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-parent</artifactId>
<version>2.0.1.RELEASE</version>
<relativePath/> <!-- lookup parent from repository -->
</parent>
<properties>
<project.build.sourceEncoding>UTF-8</project.build.sourceEncoding>
<project.reporting.outputEncoding>UTF-8</project.reporting.outputEncoding>
<java.version>1.8</java.version>
</properties>
<dependencies>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-web</artifactId>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-devtools</artifactId>
<scope>runtime</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-test</artifactId>
<scope>test</scope>
</dependency>
<dependency>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-starter-thymeleaf</artifactId>
</dependency>
</dependencies>
<build>
<plugins>
<plugin>
<groupId>org.springframework.boot</groupId>
<artifactId>spring-boot-maven-plugin</artifactId>
</plugin>
</plugins>
</build>
</project>
I tried to add the profile object as suggested by A J, bu tag is Unrecognised.
And y the way, I'm using intelliJ as IDE.
Thanks

Add dependency for "lifecycle-mapping:jar:1.0.0" in pom.xml
the error states that ":lifecycle-mapping:jar:1.0.0 is missing, no dependency information available"