打印低头思故乡 java

public static void main(String args[][){

char poet[] = str.tocharArray();

int pos = 18;

while(true)｛

for(int i=pos;i>=0;i-=6){

System.out.print("poet[i]"+" ")

}

System.out.println();

pos++;

if(pos>23){

break;

}

｝

}