Android中的java错误:找不到符号方法
我试图编译下面的代码,但我不断得到错误
Cannot find symbol method toCharacterArray(string)
Cannot find symbol method writeSuccess(int,char[],char[])
public class ControlFlow {
char[] alphabet = {'a', 'b', 'c', 'd', 'e', 'f', 'g', 'h', 'i', 'j', 'k', 'l', 'm', 'n', 'o', 'p', 'q', 'r', 's', 't', 'u', 'v', 'w', 'x', 'y', 'z'};
public void start(){
char[] sentenceToTest = toCharacterArray("the quick red fox jumps over the lazy brown dog");
char[] missingLetters = new char[26];
int numOfMissingLetters = 0;
for(int i=0; i < alphabet.length; i++){
char letterToFind = alphabet[i];
if(hasLetter(letterToFind, sentenceToTest)){
missingLetters[numOfMissingLetters] = letterToFind;
numOfMissingLetters++;
}
}
writeSuccess(numOfMissingLetters,missingLetters,sentenceToTest);
}
public boolean hasLetter(char aLetter, char[] aSentence) {
boolean found = false;
int position = 0;
while(!found){
if(aLetter == aSentence[position]){
found = true;
}else if(position == aSentence.length - 1){
break;
}else{
position++;
}
}
return found;
}
}
# 1 楼答案
应该是:
.toCharacterArray()
是字符串对象的方法。所以你做str.toCharacterArray()
,而不是toCharacterArray(str)
对于第二个问题,在您向我们展示的代码中没有实现
writeSuccess()
方法# 2 楼答案
你要做的是
并且您的类中没有定义writeSuccess方法