No puedo correr el codigo por restriccion de libreria [SOLUCIONADO INSTALAR JDK]

buenas, no se que paso, tengo este mensaje:

Código:

java.lang.Error: Unresolved compilation problems:
Access restriction: The type JFrame is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JMenuBar is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JMenu is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JMenuItem is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JLabel is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JPanel is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JLabel is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JLabel is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The method getContentPane() from the type JFrame is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor JPanel() is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JPanel is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type ImageIcon is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor ImageIcon(String) is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type ImageIcon is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor JLabel(Icon) is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JLabel is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor JLabel(String) is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JLabel is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor JLabel(String) is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JLabel is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor JMenuBar() is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JMenuBar is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor JMenu(String) is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JMenu is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor JMenuItem(String) is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JMenuItem is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor JMenuItem(String) is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JMenuItem is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The constructor JMenuItem(String) is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JMenuItem is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The method add(JMenuItem) from the type JMenu is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The method add(JMenuItem) from the type JMenu is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The method addSeparator() from the type JMenu is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The method add(JMenuItem) from the type JMenu is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The method add(JMenu) from the type JMenuBar is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The method addActionListener(ActionListener) from the type AbstractButton is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The method addActionListener(ActionListener) from the type AbstractButton is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
OptionPane cannot be resolved
campo cannot be resolved
Access restriction: The method setDefaultCloseOperation(int) from the type JFrame is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The type JFrame is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar
Access restriction: The field EXIT_ON_CLOSE from the type JFrame is not accessible due to restriction on required library C:\Archivos de programa\Java\j2re1.4.2_03\lib\rt.jar

at claseprog1.Main.<init>(Main.java:7)
at claseprog1.Main.main(Main.java:98)
Exception in thread "main"

Es necesario publicar el codigo?? no se porque se dio este tipo de error, acabo de actualizar java y no se como correr el programa, tengo cuenta administrador (o eso creo, no es mi laptop, pero puedo hacer lo de una cuenta XP administradora).

me ayudan??