java包不正确_java为什么第一行总是显示包不正确

publicclassWheel{publicstaticvoidmain(String[]args){Stringphrase[]={"ASTITCHINTIMESAVESNINE","DON'TEATYELLOWSNOW","JUSTDOIT","EVERYGOODBOYDOESFINE","IWANTMYMTV","PLAYITAG...

public class Wheel{

public static void main(String[] args){

String phrase[] = {

"A STITCH IN TIME SAVES NINE",

"DON'T EAT YELLOW SNOW",

"JUST DO IT",

"EVERY GOOD BOY DOES FINE",

"I WANT MY MTV",

"PLAY IT AGAIN,SAM",

"FROSTY THE SNOWMAN",

"ONE MORE FOR THE ROAD",

"HOME FIELD ADVANTAGE",

"VALENTINE'S DAY MASSACRE",

"GROVER CLEVELAND OHIO",

"SPAGHETTI WESTERN",

"AQUA TEEN HUNGER FORCE",

"IT'S A WONDERFUL LIFE"

};

int[] letterCount = new int[26];

for (int count = 0;count< phrase.length;count++){

String current = phrase[count];

char[] letters = current.toCharArray();

for(int count2 = 0;count2

char lett = letters[count2];

if ((lett>='A')&(lett<='Z')){

letterCount[lett-'A']++;

}

}

}

for (char count = 'A';count<='Z';count++){

System.out.print(count + ":"+

letterCount[count - 'A']+" ");

}

System.out.println();

}

}

这是一个简单的统计字符数目的程序，第一行一直提示包不正确，，运行文件时总是出错，但是继续运行可以输出正确结果，这是怎么回事，包究竟是什么？

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