Javatuples 简明教程

JavaTuples - Ennead Class

Introduction

org.javatuples.Ennead 类表示包含九个元素的元组。

The org.javatuples.Ennead class represents a Tuple with nine elements.

Class Declaration

以下 org.javatuples.Ennead 类的声明 −

Following is the declaration for org.javatuples.Ennead class −

public final class Ennead<A, B, C, D, E, F, G, H, I>
   extends Tuple
      implements IValue0<A>, IValue1<B>,
         IValue2<C>, IValue3<D>, IValue4<E>,
            IValue5<F>, IValue6<G>, IValue7<H>,
               IValue8<I>

Class Constructor

Sr.No.

Constructor & Description

Ennead(A value0, B value1, C value2, D value3, E value4, F value5, G value6, H value7, I value8) This creates a Ennead Tuple.

Class Methods

Sr.No.	Method & Description
1	Decade add(Unit tuple) This method returns a Decade tuple.
2	Decade add(X0 value) This method add a value to the tuple and returns a Decade tuple.
3	Decade addAt0(Unit value) This method add a Unit tuple at index 0 and returns a Decade tuple. Other similar method are addAt1(Unit value) which add a unit at index0 and have similar methods upto addAt8(Unit).
4	Decade addAt0(X0 value) This method add a value at index 0 and returns a Decade tuple. Other similar method are addAt1(X0 value) which add a value at index0 and have similar methods upto addAt8() with one parameter.
5	static <X> Ennead<X,X,X,X,X,X,X,X,X > fromArray(X[] array) Create tuple from array.
6	static <X> Ennead<X,X,X,X,X,X,X,X,X> fromCollection(Collection<X> collection) Create tuple from collection.
7	static <X> Ennead<X,X,X,X,X,X,X,X,X> fromIterable(Iterable<X> iterable) Create tuple from iterable.
8	static <X> Ennead<X,X,X,X,X,X,X,X> fromIterable(Iterable<X> iterable, int index) Create tuple from iterable, starting from the specified index.
9	int getSize() Return the size of the tuple.
10	A getValue0() Returns the value of the tuple at index 0. Similarly getValue1() upto getValue8() returns the value at index 1 and so on.
11	Octet<B,C,D,E,F,G,H,I> removeFrom0() Return the tuple after removing value of the tuple at index 0. Similarly removeFrom1() upto removeFrom8() returns the tuple after removing value of the tuple at index 1 and so on.
12	<X> Ennead<X,B,C,D,E,F,G,H,I> setAt0(X value) Set the value of the tuple at index 0.
13	static <A> Ennead<A,B,C,D,E,F,G,H,I> with(A value0, B value1, C value2, D value3, E value4, F value5, G value6, H value7, I value8) Create the tuple using given value.

Methods inherite

此类从以下类中继承方法：

This class inherits methods from the following classes −

org.javatuples.Tuple
Object

Example

让我们看看 Ennead 类的作用。我们将在其中看到如何使用各种方法。

Let’s see Ennead Class in action. Here we’ll see how to use various methods.

在 C:>JavaTuples 中创建一个名为 TupleTester 的 Java 类文件。

Create a java class file named TupleTester in C:\>JavaTuples.

文件：TupleTester.java

File: TupleTester.java

package com.tutorialspoint;

import java.util.ArrayList;
import java.util.List;
import org.javatuples.Decade;
import org.javatuples.Ennead;
import org.javatuples.Octet;
public class TupleTester {
   public static void main(String args[]){
      Ennead<Integer, Integer, Integer, Integer, Integer,
         Integer,Integer,Integer, Integer>
      ennead = Ennead.with(5, 6, 7,8,9,10,11,12,13);
      System.out.println(ennead);
      boolean isPresent = ennead.contains(5);
      System.out.println("5 is present: " + isPresent);
      List<Integer> list = new ArrayList<>();
      list.add(1);
      list.add(2);
      list.add(3);
      list.add(4);
      list.add(5);
      list.add(6);
      list.add(7);
      list.add(8);
      list.add(9);
      Decade<Integer, Integer, Integer, Integer, Integer,
         Integer, Integer, Integer, Integer, String> decade = ennead.add("Test");
      System.out.println(decade);
      Integer value = ennead.getValue0();
      System.out.println(value);
      Octet<Integer, Integer, Integer, Integer,Integer,
         Integer,Integer, Integer> octet = ennead.removeFrom0();
      System.out.println(octet);
      Ennead<Integer, Integer, Integer, Integer, Integer,
         Integer, Integer, Integer,Integer> ennead1 = Ennead.fromCollection(list);
      System.out.println(ennead1);
   }
}

Verify the result

使用以下 javac 编译器编译类：

Compile the classes using javac compiler as follows −

C:\JavaTuples>javac -cp javatuples-1.2.jar ./com/tutorialspoint/TupleTester.java

现在运行 TupleTester 查看结果：

Now run the TupleTester to see the result −

C:\JavaTuples>java  -cp .;javatuples-1.2.jar com.tutorialspoint.TupleTester

Output

验证输出

Verify the Output

[5, 6, 7, 8, 9, 10, 11, 12, 13]
5 is present: true
[5, 6, 7, 8, 9, 10, 11, 12, 13, Test]
5
[6, 7, 8, 9, 10, 11, 12, 13]
[1, 2, 3, 4, 5, 6, 7, 8, 9]