如何使用java.lang.String.contains()方法

實例

package com.yiibai;

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);
  }
}
讓我們來編譯和運行上面的程序，這將產生以下結果：

Method returns : true

Methods returns: false