4*4正方形

package java04_循环结构;

• 44正方形
  public class 练习5 {
  public static void main(String[] args) {
  for(int i = 1;i<=4;i++){
  for(int j = 1;j<=4;j++){
  System.out.print("");
  }
  System.out.println();
  }

for(int i = 1;i<=10;i++){
for(int j = 1;j<=i;j++){
System.out.print("*");
}
System.out.println();
}
}
}