jframe getcontentpane - SERP Analysis

https://docs.oracle.com/javase/8/docs/api/javax/swing/JFrame.html

https://stackoverflow.com/questions/25851894/what-does-getcontentpane-do-exactly

https://www.quora.com/What-is-getContentPane-in-Java

https://www.youtube.com/watch?v=JkoCAwLdRaI

https://users.cs.fiu.edu/~smithjo/COP3338/javaDoc/JFrame/javax/swing/JFrame.html

https://coderanch.com/t/746818/java/GetContentPane

https://www.reddit.com/r/javahelp/comments/kxdgbv/java_swing_jpanel_and_getcontentpane_help/

https://www.eclipse.org/forums/index.php/t/822266/

https://docs.oracle.com/en/java/javase/17/docs/api/java.desktop/javax/swing/JFrame.html

https://www.quora.com/How-does-it-works-frame-getContentPane-add-button-How-it-calls-method-on-a-method

https://www.youtube.com/watch?v=TokFzjGTato

https://www.reddit.com/r/learnprogramming/comments/1un5yt/java_understanding_container_c_getcontentpane/

https://quarkphysics.ca/ICS3U1/LeepointJava/JavaBasics/gui/gui-commentary/guicom-60-contentpane.html

https://www.cs.fsu.edu/~jtbauer/cis3931/tutorial/ui/swing/frame.html

https://www.youtube.com/watch?v=6nGPSxL7X1U

https://voyager.deanza.edu/~hso/cis35a/lecture/java15/panels/index.html

https://openclassrooms.com/forum/sujet/a-quoi-sert-vraiment-getcontentpane

http://www.java2s.com/example/java-api/javax/swing/jframe/getcontentpane-0-21.html

https://www.javadrive.jp/tutorial/jframe/index6.html

https://solt.tistory.com/20

https://www.eclipse.org/forums/index.php/t/822266//1000

https://blog.csdn.net/qq_41477675/article/details/103790992

https://www.webferrol.com/getcontentpane-add-contra-add/

https://www.sololearn.com/en/Discuss/2766252/what-does-getcontentpane-do-exactly

http://grand.patrice.free.fr/JavaSite/JavaCh7.htm

https://flute.u-shizuoka-ken.ac.jp/~s-okubo/class/java08/012.htm

https://www.pst.ifi.lmu.de/Lehre/wise-15-16/infoeinf/kap07gui.pdf

https://blog.csdn.net/weixin_63490470/article/details/135266870

https://www.java-forum.org/thema/wozu-brauche-ich-getcontentpane.119798/

https://velog.io/%40msung99/GUI

http://javadrive.s25.xrea.com/tutorial/jframe/index6.html

https://www.guj.com.br/t/para-que-serve-getcontentpane/65266

https://blog.naver.com/10hsb04/221606352460

http://www.c-jump.com/bcc/c257c/Week07/W01_0050_jframe_default_conten.htm

https://raccoonjy.tistory.com/17

https://atmarkit.itmedia.co.jp/ait/articles/0606/24/news010_2.html

https://dbs.cs.uni-duesseldorf.de/lehre/docs/java/javabuch/html/k100230.html

https://www.delftstack.com/howto/java/java-getcontentpane/

https://ridd-coding.tistory.com/45

https://ecomputernotes.com/java/swing/jframe-contentpane

https://www.java-forum.org/thema/jframe-und-getcontentpane.88429/

https://www.javadrive.jp/tutorial/jdesktop/index11.html

https://blog.naver.com/battledocho/220006947713?viewType=pc

https://brainly.com.br/tarefa/63422750

https://www.youtube.com/watch?v=-iagj7qeR40