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我有一個數組是固定數組。 我已經佈置了一些字符串,就當像被創建:charAt()無法提取數組中的單個成員
String []alpha = new String[]{"a","b","c","d","e","f","g","h","i","j","k","l","m","n","o","p","q"};
但它給我一個錯誤這條線:
alpha.charAt(0); //error
與動態數組,其中用戶是我自己也嘗試這個輸入一個字符串,然後用userText變量訪問該字符串:
userText.charAt(i); //valid
這是正確的嗎?我沒有收到錯誤。
數組不包含* charAt()方法。請參閱:http://docs.oracle.com/javase/tutorial/java/nutsandbolts/arrays.html瞭解數組如何在Java中工作 –