在Java中,我们可以使用if语句来判断一个字符串是否包含某个字。下面是如何使用if函数判断字符串是否包含某个字的示例代码: publicclassMain{publicstaticvoidmain(String[]args){Stringstr="Hello, world!";charc='o';if(str.contains(String.valueOf(c))){System.out
The given string is: welcome to w3resource Characters to find in the main string are: tower The smallest window which contains the finding characters is : to w3re Flowchart: For more Practice: Solve these Related Problems: Write a Java program to find the minimum window in a string that co...
步骤一:使用字符串的比较函数 首先,我们可以使用字符串的比较函数contains()来判断一个字符串是否包含另一个字符串。这可以用来实现模糊匹配的简单功能。下面是一个示例代码: Stringtext="Hello, World!";Stringpattern="Hello";if(text.contains(pattern)){System.out.println("匹配成功!");}else{System.out.prin...
SELECT * FROM user_table WHERE 1 = 1 <if test="userName.contains(#{condition})"> AND user_name = #{userName} </if> 在这个例子中,#{condition}是一个输入参数,你可以在调用这个查询时传入一个字符串。例如,如果你想查询名字中包含’active’的用户,你可以这样调用查询: List<User> users = sq...
Java Code: // Importing the required Java utilities packageimportjava.util.*;// Defining a class named SolutionpublicclassSolution{// Method to check if one string contains another stringpublicstaticbooleanis_str_contains(Stringstr1,Stringstr2){// Checking if either of the input strings is nulli...
We can also usestring find() functionto check if string contains a substring or not. This function returns the first index position where substring is found, else returns -1. str1='I love Python Programming'str2='Python'str3='Java'index=str1.find(str2)ifindex!=-1:print(f'"{str1}"...
str.contains(s)3.使用2之后，最里层的两个if语句：if(c1){if(c2){...}}可以写成：if(c1&&c2...
问缩短包含.contains的if语句EN它使用LinkedHashMap来保持比较顺序不变(在相关的情况下)，然后简单地搜索...
3.String.contains Next, let’s tryString.contains.containswill search a substring throughout the entireStringand will returntrueif it’s found andfalseotherwise. In this example,containsreturnstruebecause “Hey” is found. Assert.assertTrue("Hey Ho, let's go".contains("Hey"));Copy ...
implements ConstraintValidator<Region, String> { @Override public boolean isValid(String value, ConstraintValidatorContext context) { HashSet<Object> regions = new HashSet<>(); regions.add("China"); regions.add("China-Taiwan"); regions.add("China-HongKong"); return regions.contains(value); } ...