make toolbar

app/src/main/java/com/yono/messeripos/ToolbarApp.java

+//package com.yono.messeripos;
+//
+//import android.content.Context;
+//
+//import androidx.appcompat.app.AppCompatActivity;
+//
+//import com.google.android.material.appbar.MaterialToolbar;
+//
+//public class ToolbarApp {
+//
+//    public ToolbarApp(Context context, int toolbar, String title) {
+//
+//        MaterialToolbar toolbars = findViewById(toolbar);
+//        setSupportActionBar(toolbars);
+//        getSupportActionBar().setDisplayHomeAsUpEnabled(true);
+//        getSupportActionBar().setDisplayShowHomeEnabled(true);
+//        getSupportActionBar().setTitle(title);
+//    }
+//}

app/src/main/res/layout/app_bar.xml

+<?xml version="1.0" encoding="utf-8"?>
+
+<com.google.android.material.appbar.MaterialToolbar
+    android:id="@+id/topAppBar"
+    android:layout_width="match_parent"
+    android:layout_height="wrap_content"
+    android:elevation="0dp"
+    style="@style/Widget.MaterialComponents.Toolbar.Primary"
+    xmlns:android="http://schemas.android.com/apk/res/android">
+
+    </com.google.android.material.appbar.MaterialToolbar>