Printing Rectangle Star ... Inside the nested loop print star to print a star in each column of a row. System.out.println(“*”); In the main loop print a new line to move to the next line.

> 原文:[https://www . geesforgeks . org/Java-program-to-找出矩形的面积和周长-使用类-概念/](https://www.geeksforgeeks.org/java-program-to-find-out-the ...