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public class Main {

   public static void main(String[] args) {
   
      Pojo pojo = new SimplePojo();
      
      // this is a direct method call on the 'pojo' reference
      pojo.foo();
   }
}

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public class SimplePojo implements Pojo {

   public void foo() {
      // this next method invocation is a direct call on the 'this' reference
      this.bar();
   }
   
   public void bar() {
      // some logic...
   }

mehmetcemyucel

package com.cem.springnativeexample;

import org.springframework.boot.SpringApplication;
import org.springframework.boot.autoconfigure.SpringBootApplication;

@SpringBootApplication(proxyBeanMethods = false)
public class SpringNativeExampleApplication {

    public static void main(String[] args) {
        SpringApplication.run(SpringNativeExampleApplication.class, args);

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 <plugin>
  <groupId>org.springframework.experimental</groupId>
  <artifactId>spring-aot-maven-plugin</artifactId>
  <version>${spring-native.version}</version>
  <executions>
    <execution>
      <id>test-generate</id>
      <goals>
        <goal>test-generate</goal>
      </goals>

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<plugin>
  <groupId>org.springframework.boot</groupId>
  <artifactId>spring-boot-maven-plugin</artifactId>
  <configuration>
    <image>
      <builder>paketobuildpacks/builder:tiny</builder>
      <env>
        <BP_NATIVE_IMAGE>true</BP_NATIVE_IMAGE>
      </env>
    </image>

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<?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>2.4.4</version>
    <relativePath/> <!-- lookup parent from repository -->
  </parent>

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package com.cem.oauth2.configuration.feign;

import com.cem.oauth2.configuration.AuthProperties;
import feign.RequestInterceptor;
import org.keycloak.OAuth2Constants;
import org.springframework.cloud.security.oauth2.client.feign.OAuth2FeignRequestInterceptor;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.oauth2.client.DefaultOAuth2ClientContext;
import org.springframework.security.oauth2.client.resource.OAuth2ProtectedResourceDetails;

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package com.cem.oauth2.configuration.resttemplate;

import com.cem.oauth2.configuration.AuthProperties;
import org.keycloak.OAuth2Constants;
import org.springframework.context.annotation.Bean;
import org.springframework.context.annotation.Configuration;
import org.springframework.security.oauth2.client.OAuth2RestTemplate;
import org.springframework.security.oauth2.client.token.AccessTokenProvider;
import org.springframework.security.oauth2.client.token.AccessTokenProviderChain;
import org.springframework.security.oauth2.client.token.grant.client.ClientCredentialsAccessTokenProvider;

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package com.cem.oauth2.controller;

import com.cem.oauth2.service.FeignServiceClient;
import org.keycloak.adapters.springsecurity.token.KeycloakAuthenticationToken;
import org.springframework.beans.factory.annotation.Value;
import org.springframework.security.access.prepost.PreAuthorize;
import org.springframework.web.bind.annotation.GetMapping;
import org.springframework.web.bind.annotation.RestController;
import org.springframework.web.client.RestTemplate;

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package com.cem.oauth2.configuration;

import org.keycloak.adapters.KeycloakConfigResolver;
import org.keycloak.adapters.springboot.KeycloakSpringBootConfigResolver;
import org.keycloak.adapters.springsecurity.authentication.KeycloakAuthenticationProvider;
import org.keycloak.adapters.springsecurity.config.KeycloakWebSecurityConfigurerAdapter;
import org.springframework.beans.factory.annotation.Autowired;
import org.springframework.context.annotation.Bean;
import org.springframework.security.config.annotation.authentication.builders.AuthenticationManagerBuilder;
import org.springframework.security.config.annotation.method.configuration.EnableGlobalMethodSecurity;