publicclassStringContainsExample{publicstaticvoidmain(String[]args){Stringoriginal="Hello, world!";StringtoCheck="world";booleancontains=original.contains(toCheck);System.out.println("Does the original string contain '"+toCheck+"'? "+contains);}} 1. 2. 3. 4. 5. 6. 7. 8. 9. String ori...
publicclassStringContainsExample{publicstaticvoidmain(String[]args){StringprimaryString="Java is a powerful programming language";String[]substrings={"Java","powerful","language"};booleanallContained=true;for(Stringsubstring:substrings){if(!primaryString.contains(substring)){allContained=false;break;}}i...
returns trueif the string contains the specified character returns falseif the string doesn't contain the specified character Example 1: Java String contains() classMain{publicstaticvoidmain(String[] args){ String str1 ="Learn Java"; Boolean result;// check if str1 contains "Java"result = st...
public class ContainsExample { public static void main(String[] args) { String str = "hello, world!"; String substr = "world"; boolean contains = str.contains(substr); System.out.println("Does '" + str + "' contain '" + substr + "'? " + contains); } } 使用indexOf方法: inde...
String str1 = "tutorials point", str2 = "http://"; CharSequence cs1 = "int"; // string contains the specified sequence of char values boolean retval = str1.contains(cs1); System.out.println("Method returns : " + retval); // string does not contain the specified sequence of char ...
// string does not contain the specified sequence of char value retval = str2.contains("_"); System.out.println("Methods returns: " + retval); } } 让我们来编译和运行上面的程序,这将产生以下结果: Method returns : true Methods returns: false...
publicclassMain{publicstaticvoidmain(String[]args){String str="Hello, World!";String[]subStrs={"Hello","Java","World"};for(String subStr:subStrs){if(str.contains(subStr)){System.out.println("The string contains "+subStr);}else{System.out.println("The string does not contain "+subStr);...
// string contains the specified sequence of char values boolean retval = str1.contains(cs1); System.out.println("Method returns : " + retval); // string does not contain the specified sequence of char value retval = str2.contains("_"); ...
String类型有一个方法:contains(),该方法是判断字符串中是否有子字符串。如果有则返回true,如果没有则返回false。 String的contain()函数用法 String.contain()函数主要用于匹配字符串 例如 String x=(1+(8*(9-6/2)/4)*2); if(x.contains("(")) ...
publicclassContainsExample{publicstaticvoidmain(String[]args){Stringstr="Hello, world!";StringsubStr="world";booleancontains=str.contains(subStr);System.out.println("Does '"+str+"' contain '"+subStr+"'? "+contains);}} 1. 2. 3.