【发布时间】:2019-03-15 16:26:58
【问题描述】:
我需要程序接受用户字符串,然后在单独的行上输出字符串的每个字符。
这是我的 Main 类中执行菜单的方法。案例 6 是我要开始工作的案例。
private static void executeMenuChoice(int menuChoice, StringManipulator myManipulator)
{
switch (menuChoice)
{
case 1:
String userUpperCase = myManipulator.listUppercase();
JOptionPane.showMessageDialog(null, "Your string value converted to uppercase is: " + userUpperCase);
break;
case 2:
String listVowels = myManipulator.listVowels();
JOptionPane.showMessageDialog(null, "Here are the vowels in your string: " + listVowels);
break;
case 3:
String replaceVowels = myManipulator.replaceVowels();
JOptionPane.showMessageDialog(null, "Here is your string with values replaced by underscores: " + replaceVowels);
break;
case 4:
int countVowels = myManipulator.countVowels();
JOptionPane.showMessageDialog(null, "Here is the number of vowels in your string: " + countVowels);
break;
case 5:
String reverseString = myManipulator.reverseString();
JOptionPane.showMessageDialog(null, "Here is your string in reverse: " + reverseString);
break;
case 6:
char[] character = myManipulator.newlineString();
JOptionPane.showMessageDialog(null, "Here is your string with each character on a separate line: " + character);
break;
case 7:
JOptionPane.showMessageDialog(null, "You are now exiting the program.");
break;
}
这是我的第二个类中将用户字符串转换为 char 数组以将字符串的每个字符输出到不同行的方法。
public char[] newlineString() {
String newLine = getUserString();
char[] chars = newLine.toCharArray();
return chars;
}
【问题讨论】:
-
System.out.println(String.join(System.lineSeparator(), "abc".split(""))); -
我花了好几遍才知道你在问什么。
-
用户输入一个字符串值并选择菜单上的选项6“在单独的行上打印字符串值的每个字符”后。我需要公共 char[] newlineString() 方法来获取 userString 并获取字符并将它们输出到单独的行中。然后返回给主类输出给用户。
-
既然我们似乎无法沟通:试试这个,
JOptionPane.showMessageDialog(null, String.join(System.lineSeparator(), "Zayne".split("")));
标签: java arrays string char return