--- a/src/luan/modules/swing/Abstract_button.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Abstract_button.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -35,7 +35,7 @@
 Abstract_button.mt = make_metatable(Abstract_button)
 
 local function construct(button,props)
-	super_construct(button)
+	super_construct(button,props)
 	local jbutton = button.java
 	local text = delete(props,"text")
 	if text~=nil then jbutton.setText(text) end

--- a/src/luan/modules/swing/Button.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Button.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -13,7 +13,6 @@
 local Button = {}
 
 function Button.new(props)
-	props = props or {}
 	local button = { java = JButton.new() }
 	super_construct(button,props)
 	set_metatable(button,super_mt)

--- a/src/luan/modules/swing/Check_box_menu_item.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Check_box_menu_item.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -38,12 +38,11 @@
 local mt = make_metatable(Check_box_menu_item)
 
 function Check_box_menu_item.new(props)
-	props = props or {}
 	local jcbmi = JCheckBoxMenuItem.new()
 	local cbmi = { java = jcbmi }
+	super_construct(cbmi,props)
 	local state = delete(props,"state")
 	if state~=nil then jcbmi.setState(state) end
-	super_construct(cbmi,props)
 	check_empty(props)
 	set_metatable(cbmi,mt)
 	return cbmi

--- a/src/luan/modules/swing/Component.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Component.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -2,11 +2,13 @@
 local error = Luan.error
 local type = Luan.type or error()
 local set_metatable = Luan.set_metatable or error()
+local ipairs = Luan.ipairs or error()
 local Utils = require "luan:swing/Utils.luan"
 local fail = Utils.fail or error()
 local make_metatable = Utils.make_metatable or error()
 local delete = Utils.delete or error()
 local check_empty = Utils.check_empty or error()
+local check_not_nil = Utils.check_not_nil or error()
 local get_font = require("luan:swing/Font.luan").get or error()
 require "java"
 local JPanel = require "java:javax.swing.JPanel"
@@ -41,8 +43,19 @@
 local mt = make_metatable(Component)
 
 local function construct(component,props)
+	check_not_nil(props)
 	local jcomponent = component.java
 	jcomponent.putClientProperty("luan",component)  -- don't gc
+	local layout = delete(props,"layout")
+	if layout~=nil then jcomponent.setLayout(layout) end
+	local border = delete(props,"border")
+	if border~=nil then jcomponent.setBorder(border) end
+	local children = delete(props,"children")
+	if children~=nil then
+		for _, child in ipairs(children) do
+			jcomponent.add(child.java)
+		end
+	end
 	component.request_focus_in_window = jcomponent.requestFocusInWindow
 	function component.set_font(font)
 		if type(font) == "table" then
@@ -58,6 +71,11 @@
 	function component.add(el)
 		jcomponent.add(el.java)
 	end
+	function component.add_all(list)
+		for _, child in ipairs(list) do
+			jcomponent.add(child.java)
+		end
+	end
 	return component
 end
 Component.construct = construct
@@ -72,6 +90,7 @@
 function Component.new_panel(props)
 	local panel = { java = JPanel.new() }
 	construct(panel,props)
+	check_empty(props)
 	set_metatable(panel,mt)
 	return panel
 end

--- a/src/luan/modules/swing/Menu.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Menu.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -24,7 +24,6 @@
 Menu.separator = separator
 
 function Menu.new(props)
-	props = props or {}
 	local jmenu = JMenu.new()
 	local menu = { java = jmenu }
 	super_construct(menu,props)

--- a/src/luan/modules/swing/Menu_bar.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Menu_bar.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -5,7 +5,6 @@
 local Utils = require "luan:swing/Utils.luan"
 local make_metatable = Utils.make_metatable or error()
 local check_empty = Utils.check_empty or error()
-local check_not_nil = Utils.check_not_nil or error()
 local delete = Utils.delete or error()
 local Component = require "luan:swing/Component.luan"
 local super_construct = Component.construct or error()
@@ -18,10 +17,9 @@
 local mt = make_metatable(Component)
 
 function Menu_bar.new(props)
-	check_not_nil(props)
 	local jmenu_bar = JMenuBar.new()
 	local menu_bar = { java = jmenu_bar }
-	super_construct(menu_bar)
+	super_construct(menu_bar,props)
 	local menus = delete(props,"menus")
 	if menus~=nil then
 		for _, menu in ipairs(menus) do

--- a/src/luan/modules/swing/Menu_item.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Menu_item.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -58,7 +58,6 @@
 Menu_item.construct = construct
 
 function Menu_item.new(props)
-	props = props or {}
 	local jmenu_item = JMenuItem.new()
 	local menu_item = { java = jmenu_item }
 	menu_item = construct(menu_item,props)

--- a/src/luan/modules/swing/Scroll_pane.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Scroll_pane.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -3,6 +3,8 @@
 local set_metatable = Luan.set_metatable or error()
 local Utils = require "luan:swing/Utils.luan"
 local make_metatable = Utils.make_metatable or error()
+local delete = Utils.delete or error()
+local check_empty = Utils.check_empty or error()
 local Component = require "luan:swing/Component.luan"
 local super_construct = Component.construct or error()
 require "java"
@@ -13,10 +15,12 @@
 
 local mt = make_metatable(Component)
 
-function Scroll_pane.new(view)
+function Scroll_pane.new(props)
+	local view = delete(props,"view") or error "view property requied"
 	local jscroll_pane = JScrollPane.new(view.java)
 	local scroll_pane = { java = jscroll_pane }
-	super_construct(scroll_pane)
+	super_construct(scroll_pane,props)
+	check_empty(props)
 	function scroll_pane.set_row_header_view(view)
 		jscroll_pane.setRowHeaderView(view.java)
 	end

--- a/src/luan/modules/swing/Text_area.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Text_area.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -4,10 +4,11 @@
 local Utils = require "luan:swing/Utils.luan"
 local fail = Utils.fail or error()
 local make_metatable = Utils.make_metatable or error()
+local check_empty = Utils.check_empty or error()
 local Text_component = require("luan:swing/Text_component.luan")
 local super__index = Text_component.__index or error()
 local super__new_index = Text_component.__new_index or error()
-local new_text_component = Text_component.new or error()
+local super_construct = Text_component.construct or error()
 require "java"
 local TextAreaLuan = require "java:luan.modules.swing.TextAreaLuan"
 
@@ -66,10 +67,11 @@
 
 local mt = make_metatable(Text_area)
 
-function Text_area.new()
-	local text_area = { java = TextAreaLuan.new() }
-	new_text_component(text_area)
-	local jtext_area = text_area.java
+function Text_area.new(props)
+	local jtext_area = TextAreaLuan.new()
+	local text_area = { java = jtext_area }
+	super_construct(text_area,props)
+	check_empty(props)
 	text_area.show_whitespace = jtext_area.showWhitespace
 	function text_area.get_line_from_position(pos)
 		return jtext_area.getLineOfOffset(pos-1) + 1

--- a/src/luan/modules/swing/Text_area_line_numbers.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Text_area_line_numbers.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -3,8 +3,10 @@
 local set_metatable = Luan.set_metatable or error()
 local Utils = require "luan:swing/Utils.luan"
 local make_metatable = Utils.make_metatable or error()
+local delete = Utils.delete or error()
+local check_empty = Utils.check_empty or error()
 local Component = require "luan:swing/Component.luan"
-local super = Component.construct or error()
+local super_construct = Component.construct or error()
 require "java"
 local TextAreaLineNumbersLuan = require "java:luan.modules.swing.TextAreaLineNumbersLuan"
 
@@ -13,10 +15,12 @@
 
 local mt = make_metatable(Component)
 
-function TextAreaLineNumbers.new(text_area)
+function TextAreaLineNumbers.new(props)
+	local text_area = delete(props,"text_area") or error "text_area property requied"
 	local jtaln = TextAreaLineNumbersLuan.new(text_area.java)
 	local taln = { java = jtaln }
-	super(taln)
+	super_construct(taln,props)
+	check_empty(props)
 	set_metatable(taln,mt)
 	return taln
 end

--- a/src/luan/modules/swing/Text_component.luan	Tue Apr 08 19:43:00 2025 -0600
+++ b/src/luan/modules/swing/Text_component.luan	Tue Apr 08 23:02:14 2025 -0600
@@ -7,7 +7,7 @@
 local Component = require "luan:swing/Component.luan"
 local super__index = Component.__index or error()
 local super__new_index = Component.__new_index or error()
-local super = Component.construct or error()
+local super_construct = Component.construct or error()
 local new_document = require("luan:swing/Document.luan").new or error()
 require "java"
 local SwingLuan = require "java:luan.modules.swing.SwingLuan"
@@ -47,8 +47,8 @@
 	return fail
 end
 
-function Text_component.new(component)
-	super(component)
+function Text_component.construct(component,props)
+	super_construct(component,props)
 	local jcomponent = component.java
 	fixTextComponent(jcomponent)
 	component.cut = jcomponent.cut