JavaTuples 包含()方法

原文:https://www.geeksforgeeks.org/java-tuples-contains-method/

组织. javatuples 中的包含()方法用于检查一个值是否存在于作为参数给出的 TupleClass 中。这个方法可以用于 javatuples 库的任何元组类对象。它返回一个布尔值，该值基于 TupleClass 中该值的存在与否。

方法申报:

public final boolean contains(Object value)

语法:

boolean result = TupleClassObject.contains(X value)

参数:该方法以值为参数，其中:

  • X–表示参数中值的数据类型。
  • TupleClassObject–表示像单位、五进制、十进制等使用的 JavaTuple 类对象。

返回值:如果元组中存在参数值，则该方法返回 true。否则返回假

下面的程序说明了使用 contains()方法的各种方法:

程序 1: 使用包含()的单位类:

// Below is a Java program to create
// a Unit tuple from contains() method

import java.util.*;
import org.javatuples.Unit;

class GfG {
    public static void main(String[] args)
    {
        // Creating an Unit with one value
        Unit<String> unit = Unit.with("GeeksforGeeks");

        // Using contains() method

        boolean res;
        String check;

        // for True result
        check = "GeeksforGeeks";
        res = unit.contains(check);

        System.out.println("Is " + check + " present : " + res);

        // for False result
        check = "Geeks";
        res = unit.contains(check);

        System.out.println("Is " + check + " present : " + res);
    }
}

输出:

Is GeeksforGeeks present : true
Is Geeks present : false

程序二:使用包含()的带十年类:

// Below is a Java program to create
// a Unit tuple from contains() method

import java.util.*;
import org.javatuples.Decade;

class GfG {
    public static void main(String[] args)
    {
        // Creating a Decade with 10 value
        Decade<String, String, String, String, String,
               String, String, String, String, String>
            decade = Decade.with("Geeks",
                                 "for",
                                 "Geeks",
                                 "A",
                                 "Computer",
                                 "Science",
                                 "Portal",
                                 "for",
                                 "Geeks",
                                 "RishabhPrabhu");

        // Using contains() method

        boolean res;
        String check;

        // for True result
        check = "GeeksforGeeks";
        res = decade.contains(check);

        System.out.println("Is " + check + " present : " + res);

        // for False result
        check = "Geeks";
        res = decade.contains(check);

        System.out.println("Is " + check + " present : " + res);
    }
}

T4】

输出:

Is GeeksforGeeks present : true
Is Geeks present : false

注意:同样，它也可以用于任何其他 JavaTuple 类。

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