rename directories

java-spring-boot/src/main/java/com/example/money_transfer/MoneyTransferApplication.java

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+package com.example.money_transfer;
+
+import org.springframework.boot.SpringApplication;
+import org.springframework.boot.autoconfigure.SpringBootApplication;
+
+@SpringBootApplication
+public class MoneyTransferApplication {
+
+	public static void main(String[] args) {
+		SpringApplication.run(MoneyTransferApplication.class, args);
+	}
+
+}

java-spring-boot/src/main/java/com/example/money_transfer/MoneyTransferController.java

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+package com.example.money_transfer;
+
+import org.springframework.web.bind.annotation.PostMapping;
+import org.springframework.web.bind.annotation.RequestBody;
+import org.springframework.web.bind.annotation.RestController;
+import org.springframework.http.ResponseEntity;
+import lombok.Data;
+import java.util.Map;
+import java.util.HashMap;
+
+@RestController
+public class MoneyTransferController {
+
+	// Global accounts variable
+	private static final Map<String, Map<String, Double>> accounts = new HashMap<String, Map<String, Double>>() {{
+		put("1", new HashMap<String, Double>() {{ put("amount", 1000.0); }});
+		put("2", new HashMap<String, Double>() {{ put("amount", 1000.0); }});
+	}};
+
+	@PostMapping("/transfer")
+	public ResponseEntity<?> transfer(@RequestBody TransferRequest request) {
+		if (request.getAmount() <= 0) {
+			return ResponseEntity.badRequest().body(
+				new TransferErrorResponse("FAILED", "Amount must be greater than 0")
+			);
+		}
+
+        System.out.println("Transfer request: " + request);
+        System.out.println("Accounts: " + accounts);
+		
+		return ResponseEntity.ok(
+			new TransferResponse(request.getAmount(), request.getSender(), request.getReceiver())
+		);
+	}
+	
+	@Data
+	public static class TransferRequest {
+		private Double amount;
+		private String sender;
+		private String receiver;
+	}
+	
+	@Data
+	public static class TransferResponse {
+		private Double amount;
+		private String sender;
+		private String receiver;
+
+        public TransferResponse(Double amount, String sender, String receiver) {
+            this.amount = amount;
+            this.sender = sender;
+            this.receiver = receiver;
+        }
+    }
+
+    @Data
+    public static class TransferErrorResponse {
+        private String error;
+        private String message;
+
+        public TransferErrorResponse(String error, String message) {
+            this.error = error;
+            this.message = message;
+        }
+    }
+}

java-spring-boot/src/main/resources/application.properties

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+spring.application.name=money-transfer
+server.port=8001

java-spring-boot/src/test/java/com/example/money_transfer/MoneyTransferApplicationTests.java

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+package com.example.money_transfer;
+
+import org.junit.jupiter.api.Test;
+import org.springframework.boot.test.context.SpringBootTest;
+
+@SpringBootTest
+class MoneyTransferApplicationTests {
+
+	@Test
+	void contextLoads() {
+	}
+
+}