java判断字符串是否含有需要内容

java判断字符串是否含有需要内容

用contains方法

import java.lang.*;

public class StringDemo {

public static void main(String[] args) {

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 value
retval = str2.contains("_");
System.out.println("Methods returns: " + retval);
}
}