Question

我尝试接受用户输入的字符串，然后在几个新方法中修改它，以便稍后在程序中调用main。目前这段代码不起作用，我非常感谢一些帮助让它工作或者正确的方法，以便在程序后期将这些方法的返回值调用到main中。

import java.util.Scanner;

public class TextAnalyzer {
    /*takes the user input and counts total characters to be called later.*/
    public static int getNumOfCharacters(int textLength) { 
        Scanner scnr = new Scanner(System.in); 
        String usrText = "";

        usrText = scnr.nextLine(); 
        textLength = usrText.length();

        return textLength;
    }

    /*removes all white space from string to be called later.*/
    public static String outputWithoutWhitespace(String noWhiteSpace) {
        Scanner scnr = new Scanner(System.in); 
        String usrText = "";

        usrText = scnr.nextLine();        
        noWhiteSpace = usrText.replaceAll("\\s+","");

        return noWhiteSpace;
    }

    public static void main(String[] args) {
        Scanner scnr = new Scanner(System.in); 
        String usrText = "";

        System.out.print("Enter a sentence or phrase: ");
        usrText = scnr.nextLine(); 
        System.out.println("You entered: " + usrText);

        System.out.println();

        System.out.print("Number of characters: ");
        System.out.println(getNumofCharacters(usrText));

        System.out.print("String with no whitespace: ");
        System.out.println(outputWithoutWhitespace(usrText));

    }
}

Answer 1

我在调用错误的东西时遇到了一些问题，而且没有匹配方法名称的格式。这是我用的。谢谢！

import java.util.Scanner;
public class TextAnalyzer {

public static int getNumOfCharacters(String usrText) {
int textLength;

textLength = usrText.length();

return textLength;
}

public static String outputWithoutWhitespace(String usrText) {
String noWhiteSpace = "";

noWhiteSpace = usrText.replaceAll("\\s+","");

return noWhiteSpace;
}

public static void main(String[] args) {
Scanner scnr = new Scanner(System.in);
String usrText = "";


System.out.println("Enter a sentence or phrase: ");
usrText = scnr.nextLine();
System.out.println("You entered: " + usrText);

System.out.println();

System.out.print("Number of characters: ");
System.out.println(getNumOfCharacters(usrText));

System.out.print("String with no whitespace: ");
System.out.println(outputWithoutWhitespace(usrText));
return; 
}
}

从这些方法中获取返回值，以便稍后在程序中调用main

1 个答案: