📌  相关文章
📜  JavaTuples-四重奏类

📅  最后修改于: 2020-11-15 03:28:13             🧑  作者: Mango

介绍

org.javatuples.Quartet类表示具有四个元素的元组。

类声明

以下是org.javatuples.Quartet类的声明-

public final class Quartet
   extends Tuple
      implements IValue0, IValue1, IValue2, IValue3

类构造器

Sr.No. Constructor & Description
1

Quartet(A value0, B value1, C value2, D value3)

This creates a Quartet Tuple.

类方法

Similarly setAt1() upto setAt3() set the value at index 1, and so on.

Sr.No. Method & Description
1

Quintet add(Unit tuple)

This method returns a Quintet tuple.

Similarly other methods to add tuples are available e.g. add(Pair tuple) returns Sextet and upto add(Sextet tuple) returns Decade tuple.
2

Quintet add(X0 value)

This method add a value to the tuple and returns a Quintet tuple.

Similarly other methods to add values are available e.g. add(X0 value0, X1 value1) returns Sextet and so on upto add() with six parameters.
3

Quintet addAt0(Unit value)

This method add a Unit tuple at index 0 and returns a Quintet tuple.

Similarly other methods to add tuples are available e.g. addAt0(Pair value) returns Sextet and so on upto addAt0(Sextet). Other similar method are addAt1(Unit value) which add a unit at index0 and have similar methods upto addAt2(Sextet).
4

Quintet addAt0(X0 value)

This method add a value at index 0 and returns a Quintet tuple.

Similarly other methods to add values are available e.g. addAt0(X0 value0, X1 value1) returns Sextet and so on upto addAt0() with six parameters. Other similar method are addAt1(X0 value) which add a value at index0 and have similar methods upto addAt2() with six parameters.
5

static Quartet fromArray(X[] array)

Create tuple from array.
6

static Quartet fromCollection(Collection collection)

Create tuple from collection.
7

static Quartet fromIterable(Iterable iterable)

Create tuple from iterable.
8

static Quartet fromIterable(Iterable 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 getValue3() returns the value at index 1 and so on.
11

Triplet removeFrom0()

Return the tuple after removing value of the tuple at index 0.

Similarly removeFrom1() upto removeFrom3() returns the tuple after removing value of the tuple at index 1 and so on.
12

Quartet setAt0(X value)

Set the value of the tuple at index 0.
13

static Quartet with(A value0, B value1, C value2, D value3)

Create the tuple using given value.

方法继承

此类从以下类继承方法-

  • org.javatuples.Tuple

  • 目的

例

让我们来看看四方类的实际应用。在这里，我们将看到如何使用各种方法。

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

文件：TupleTester.java

package com.tutorialspoint;
import java.util.ArrayList;
import java.util.List;
import org.javatuples.Quartet;
import org.javatuples.Quintet;
import org.javatuples.Triplet;

public class TupleTester {
   public static void main(String args[]){
      Quartet quartet = Quartet.with(
         5, 6, 7,8
      );
      System.out.println(quartet);
      boolean isPresent = quartet.contains(5);
      System.out.println("5 is present: " + isPresent);
      List list = new ArrayList<>();
      list.add(1);
      list.add(2);
      list.add(3);
      list.add(4);
      Quintet quintet = quartet.add("Test");
      System.out.println(quintet);
      Integer value = quartet.getValue0();
      System.out.println(value);
      Triplet triplet = quartet.removeFrom0();
      System.out.println(triplet);
      Quartet quartet1 = Quartet.fromCollection(list);   
      System.out.println(quartet1);
   }
}

验证结果

使用javac编译器编译类，如下所示：

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

现在运行TupleTester以查看结果-

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

输出

验证输出

[5, 6, 7, 8]
5 is present: true
[5, 6, 7, 8, Test]
5
[6, 7, 8]
[1, 2, 3, 4]