Question

Java编程：从输入的字符串中删去输入的所有子字符串

Java编程：从输入的字符串中删去输入的所有子字符串，例如：输入字符串"this a string",输入子字符串“is”,则删除后的字符串“th a string”

Answer 1

字符串中方法：String replaceFirst(String oldStr, String newStr)用newStr替换掉该字符串中的第一次出现的oldStr；
String replace(String oldStr, String newStr)用newStr替换掉该字符串中所用的oldStr。
你使用删除就是把newStr=""即可
知道了方法，这个写起来就没任何难度
多看看String类中的方法，用的频率太高了。

Answer 2

import java.util.Scanner;

public class Du {

public static void main(String[] args) {

Scanner scanner = new Scanner(System.in);

System.out.print("Please input the source string: ");
String source = scanner.nextLine();

System.out.print("Please input substring: ");
String subStr = scanner.next();

String newStr = source.replaceAll(subStr, "");
System.out.println("After removing the " + subStr + ", the source string is: " + newStr);
}

}

----------------testing
Please input the source string: this a string
Please input substring: is
After removing the is, the source string is: th a string

Answer 3

public class Admin {

public static void main(String... args) {
String str = "this a string";
str = test(str, "is");
System.out.println(str);
}

private static String test(String str, String string) {
return str.replaceAll(string, "");
}

}