java输出菱形

class ForForTest {
public static void main(String[] args) {
for(int i = 1;i<=11;i+=2){//控制行数
for(int m = 1;m<=11-i;m+=2){
System.out.print(" ");
}
for(int n = 1;n<=i;n++){
System.out.print("*");
}
System.out.println();
}
for(int i = 1;i<=9;i+=2){
for(int k = 1;k<=i+1;k+=2){
System.out.print(" ");
}
for(int j = 1;j<=9-i+1;j++){
System.out.print("*");
}
System.out.println();
}
}
}