在考生文件夹中存有文件名为 Java_3.java文件,本该程序的功能是:对于一个英文文本字符串,统计其包含的英文元音字母的个数。要求考生对Java_3.java进行完善并调试,使程序的运行结果如下: 由于 Java_3.java 文件不完整,请在注释行“ //******Found****** ”下一行语句的下划线地方填入正确内容,然后删除下划线,请勿删除注释行或其他己有语句内容。存盘时不得改变原有文件的文件名及存放目录。 具体程序如下: public class Java_3{ public static void main(String[] args) { String text = "Beijing, the Capital City, is the political," + "cultural and diplomatic centre of China. It has" + "become a modern international cosmopolitan city" + "with more than 11 million people. The Capital" + "International Airport, 23.5 km from the city centre," + "is China's largest and most advanced airport."; int vowels = 0 ; //*********Found********* int _____________ = text.length(); for(int i = 0; i < textLength; i++) { //*********Found********* char ch = Character.toLowerCase(text.__________); if(ch == 'a' || ch == 'e' || ch == 'i' || ch == 'o' || ch == 'u') { //*********Found********* ____________; } } System.out.println("The text contained vowels: " + vowels + "\n" ); } }