java - Correct way to create a JFrame -

java - Correct way to create a JFrame -

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extends jframe vs. creating within the program 6 answers

i reading 2 ways of creating jframe , don't undersand improve or differences:

import java.awt.*; import javax.swing.*; public class myframepanel { public static void main(string[] args) { jframe myframe = new jframe("myframepanel"); ....

and 1 find in books:

import java.awt.*; import javax.swing.*; public class buttonframe **extends jframe**{ public buttonframe() { super("button frame"); setdefaultcloseoperation(jframe.exit_on_close); ... setvisible(true); } public static void main(string[] args) { buttonframe bf = new buttonframe(); } }

i going utilize first 1 -i found in stackoverflow- wonder why of books reading java using "extends jframe" one.

thank much , sorry bothering if question stupid.

the first 1 choice. think composition on inheritance.

to favor composition on inheritance design principle gives design higher flexibility, giving business-domain classes , more stable business domain in long term.

if won't utilize myframepanel within jframe, instead in applet, it's easier switch , improve maintain in long term.

java swing jframe