java中object转数组_在Java中将Object []数组转换为int []数组？

分手后的思念是犯贱 2022-11-02 13:19 178阅读 0赞

似乎没有简单的方法可以做到这一点,但这是我到目前为止所做的,如果有人能够纠正它,使其工作将是伟大的.在“newarray \[e\] = array \[i\] .intValue();”我收到一个错误“没有命名方法”intValue“在类型”

java.lang.Object“中找到.”

救命！

/\*

Description: A game that displays digits 0-9 and asks the user for a number N.

It then reverses the first N numbers of the sequence. It continues this until

all of the numbers are in order.

numbers

\*/

import hsa.Console;

import java.util.ArrayList;

import java.util.Collections;

import java.util.List;

import java.util.Arrays;

public class ReversalGame3test

static Console c;

public static void main (String\[\] args)

c = new Console ();

c.println ("3. REVERSAL GAME");

c.println ("");

c.println ("Displayed below are the digits 0-9 in random order. You must then enter a");

c.println ("number N after which the computer will reverse the first N numbers in the");

c.println ("sequence. The goal of this game is to sort all of the numbers in the fewest");

c.println ("number of reversals.");

c.println (""); //introduction

List numbers = new ArrayList ();

numbers.add ("0");

numbers.add ("1");

numbers.add ("2");

numbers.add ("3");

numbers.add ("4");

numbers.add ("5");

numbers.add ("6");

numbers.add ("7");

numbers.add ("8");

numbers.add ("9");

Collections.shuffle (numbers);

Object\[\] array = numbers.toArray (new String \[10\]); // declares + shuffles numbers and converts them to array

c.print ("Random Order: ");

for (int i = 0 ; i < 10 ; i++)

c.print ((array \[i\]) + " ");

c.println ("");

boolean check = false;

boolean check2 = false;

String NS;

int N = 0;

int count = 0;

int e = -1;

int\[\] newarray = new int \[10\];

//INPUT

c.print ("Enter a number: ");

NS = c.readString ();

count += 1;

check = isInteger (NS);

if (check == true)

N = Integer.parseInt (NS);

if (N < 1 || N > 10)

check = false;

c.println ("ERROR - INPUT NOT VALID");

c.println ("");

else

c.print ("Next Order: ");

for (int i = N - 1 ; i > -1 ; i--)

e += 1;

newarray \[e\] = array \[i\].intValue ();

c.print ((newarray \[e\]) + " ");

for (int i = N ; i < 10 ; i++)

e += 1;

newarray \[e\] = array \[i\].intValue ();

c.print ((newarray \[e\]) + " ");

check2 = sorted (newarray);

\} // rearranges numbers if valid

\} // checks if N is valid number

while (check == false);

\} // main method

public static boolean isInteger (String input)

try

Integer.parseInt (input);

return true;

catch (NumberFormatException nfe)

return false;

\} //isInteger method

public static boolean sorted (int array\[\])

boolean isSorted = false;

for (int i = 0 ; i < 10 ; i++)

if (array \[i\] < array \[i + 1\])

isSorted = true;

else if (array \[i\] > array \[i + 1\])

isSorted = true;

else

isSorted = false;

if (isSorted != true)

return isSorted;

\} // sorted method

java中object转数组_在Java中将Object []数组转换为int []数组？

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