线程"main"中的异常 java.lang.ArrayIndexOutOfBoundsException： Index Out of bounds

Question

在运行以下代码时出现此错误。我找不到代码有什么问题。

据我所知，我的第二个字符数组有一些问题。但却找不到问题所在。首先尝试在temp_count之前运行最后一个循环。然后也尝试了temp_count±1。然而，我失败了。我也试过采取不同的数组大小。还是没有运气

import java.util.Scanner;
public class oop2 
{
public static void main(String[] args) 
{
Scanner sc = new Scanner(System.in);
String str = new String();
int temp_count = 0;
//New input of string
str=sc.nextLine();
char[] c = str.toCharArray();
char[] temp = new char[temp_count];
//Converting uppercase to lower case for convenience
for(int i=0; i<str.length(); i++)
{
if (Character.isUpperCase(c[i])) 
{
c[i]=(char) (c[i]+32);    
}
}

//verifying whether the alphabet exists
for(char x = 'a'; x<='z'; x++)
{
int count=0;
for(int i=0; c[i]!=''; i++)
{
if (c[i]==x) 
{
count++;
}
}

//if the alphabet is not found, then putting the alphabet in
if (count==0) 
{
temp[temp_count]=x;
temp_count++;    
}
}

//Verifying whether it's a pangram or not
if (temp_count==0) 
{
System.out.println("Pangram");    
}
else
{
//if not pangram then this part will execute
System.out.println("Not Pangram");
System.out.printf("Missing Characters: ");
//printing out the missing character
for(int i=0; i<temp_count-1; i++)
{
System.out.print(temp[i]+", ");
}
}
sc.close();
}    
}

Answer 1

import java.util.Scanner;
public class Main {
public static void main(String[] args) {
Scanner sc = new Scanner(System.in);
String str = new String();
int temp_count = 0;
//New input of string
str = sc.nextLine();
char[] c = str.toCharArray();
char[] temp = new char[0];
//Converting uppercase to lower case for convenience
for (int i = 0; i < str.length(); i++) {
if (Character.isUpperCase(c[i])) {
c[i] = (char)(c[i] + 32);
}
}
//verifying whether the alphabet exists
for (char x = 'a'; x <= 'z'; x++) {
int count = 0;
for (int i = 0; c[i] != ''; i++) {
if (c[i] == x) {
count++;
}
}
//if the alphabet is not found, then putting the alphabet in
if (count == 0) {
char [] copy = new char[temp.length+1];
for (int i = 0; i < temp.length; i++) {
copy[i]=temp[i];
}
copy[copy.length-1] = x;
temp=copy;
}
}
//Verifying whether it's a pangram or not
if (temp_count == 0) {
System.out.println("Pangram");
} else {
//if not pangram then this part will execute
System.out.println("Not Pangram");
System.out.printf("Missing Characters: ");
//printing out the missing character
for (int i = 0; i < temp_count - 1; i++) {
System.out.print(temp[i] + ", ");
}
}
sc.close();
}
}
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