enable slf4j and lombok

Author: june0313

build.gradle.kts

@@ -1,5 +1,6 @@
 plugins {
     id("java")
+    id("io.freefair.lombok") version("8.11")
 }
 
 group = "io.concurrency"
@@ -10,6 +11,9 @@ repositories {
 }
 
 dependencies {
+    implementation("ch.qos.logback:logback-classic:1.4.1")
+    implementation("org.slf4j:slf4j-api:2.0.3")
+
     testImplementation(platform("org.junit:junit-bom:5.9.1"))
     testImplementation("org.junit.jupiter:junit-jupiter")
 }

src/main/java/io/concurrency/chapter04/exam01/DefaultExceptionHandlerExample.java

@@ -1,30 +1,29 @@
 package io.concurrency.chapter04.exam01;
 
-import java.util.logging.Level;
-import java.util.logging.Logger;
+import lombok.extern.slf4j.Slf4j;
 
+@Slf4j
 public class DefaultExceptionHandlerExample {
 
     public static void main(String[] args) {
 
         // 모든 스레드의 예외에 대한 기본 핸들러 설정
-        Thread.setDefaultUncaughtExceptionHandler(new Thread.UncaughtExceptionHandler() {
-            @Override
-            public void uncaughtException(Thread t, Throwable e) {
-                System.out.println(t.getName() + " 에서 예외 발생 " + e);
-            }
-        });
+        Thread.setDefaultUncaughtExceptionHandler(defaultThreadExceptionHandler());
 
         // 예외를 발생시키는 여러 스레드
         Thread thread1 = new Thread(() -> {
             throw new RuntimeException("스레드 1 예외!");
         });
 
         Thread thread2 = new Thread(() -> {
-            throw new RuntimeException("스레드 2 예외!");
+            throw new IllegalStateException("스레드 2 예외!");
         });
 
         thread1.start();
         thread2.start();
     }
+
+    private static Thread.UncaughtExceptionHandler defaultThreadExceptionHandler() {
+        return (thread, exception) -> log.info("{}에서 예외 발생 : {}", thread.getName(), exception.getMessage());
+    }
 }