Added SampleApp to show usage

SampleApp/build.gradle.kts

@@ -0,0 +1,16 @@
+plugins {
+    kotlin("jvm")
+}
+
+
+repositories {
+    mavenCentral()
+    maven {
+        setUrl("https://maven.dankito.net/api/packages/codinux/maven")
+    }
+}
+
+
+dependencies {
+    implementation("net.codinux.banking.client:fints4k-banking-client:0.5.0")
+}

SampleApp/src/main/kotlin/net/codinux/banking/client/fints4k/example/ShowUsage.kt

@@ -0,0 +1,50 @@
+package net.codinux.banking.client.fints4k.example
+
+import net.codinux.banking.client.SimpleBankingClientCallback
+import net.codinux.banking.client.fints4k.FinTs4kBankingClientForCustomer
+import net.codinux.banking.client.getAccountData
+import net.codinux.banking.client.model.tan.EnterTanResult
+
+fun main() {
+    ShowUsage().getAccountData()
+}
+
+class ShowUsage {
+
+    private val bankCode = "" // Bankleitzahl deiner Bank
+
+    private val loginName = "" // Online-Banking Login Name mit dem du dich beim Online-Banking deiner Bank anmeldest
+
+    private val password = "" // Online-Banking Password mit dem du dich beim Online-Banking deiner Bank anmeldest
+
+
+    fun getAccountData() {
+        val client = FinTs4kBankingClientForCustomer(bankCode, loginName, password, SimpleBankingClientCallback { tanChallenge, callback ->
+            val tan: String? = null // if a TAN is required, add a UI or ...
+            callback.invoke(EnterTanResult(tan)) // ...  set a break point here, get TAN e.g. from your TAN app, set tan variable in debugger view and resume debugger
+        })
+
+        val response = client.getAccountData()
+
+        response.error?.let{ error ->
+            println("Could not fetch account data: ${error.internalError ?: error.errorMessagesFromBank.joinToString()}")
+        }
+
+        response.data?.let { data ->
+            val customer = data.customer
+            println("Kunde: ${customer.customerName} ${customer.accounts.size} Konten @ ${customer.bic} ${customer.bankName}")
+
+            println()
+            println("Konten:")
+            customer.accounts.sortedBy { it.type }.forEach { account ->
+                println("${account.identifier} ${account.productName} ${account.balance} ${account.currency}")
+            }
+
+            println()
+            println("Umsätze:")
+            data.bookedTransactions.forEach { transaction ->
+                println("${transaction.valueDate} ${transaction.amount} ${transaction.currency} ${transaction.otherPartyName ?: ""} - ${transaction.reference}")
+            }
+        }
+    }
+}

settings.gradle.kts

@@ -31,3 +31,5 @@ include("FinTs4jBankingClient")
 project(":FinTs4jBankingClient").apply {
     name = "fints4k-banking-client"
 }
+
+include("SampleApp")