plus我不明白为什么在我import java.util.Random; // random class
public class MartianBattler { // start of class
public static void main(String[] args) { // start of main
int battles = 0; //initializes battles to 0
Random rand = new Random(); // creates an object of random class
int[] squad = new int[rand.nextInt(5)+1]; // generates a random number to tell us how many squads we will have
battles = rand.nextInt((5)+1); // generates number of battles to fight
createSquad(squad);
battle(squad, battles); // passes array squads elements to battle static method
} // end of main
public static void battle(int[] squad, int battle) { // static method that sends troops to battle
for(int x = 0; x < battle; x++ ) { // for loop
Random randS = new Random(); // generate random object
int first = randS.nextInt(squad.length)+1; // generate first martian to go
System.out.printf("%d%n %d%n%d%n", squad.length, first, battle);
}
}
public static void createSquad(int[] squad) {
Random ramdS = new Random();
MartianAttack foo = new MartianAttack(0,false);
boolean clone = false;
for(int x = 0; x <= squad.length; x++)
{
clone = ramdS.nextBoolean();
if (clone == true)
squad[x] = foo.getidNumber();
else
squad[x] = ramdS.nextInt((100)+1);
}
}
} // end of class
run:
Exception in thread "main" java.lang.ArrayIndexOutOfBoundsException: 5
at MartianBattler.createSquad(MartianBattler.java:48)
at MartianBattler.main(MartianBattler.java:12)
C:\Users\Ethan\AppData\Local\NetBeans\Cache\8.1\executor-snippets\run.xml:53: Java returned: 1
BUILD FAILED (total time: 0 seconds)
方法的for循环期间填充数组元素时，我的数组出现了问题。它不是让我把数组传递给createSquad方法..为什么？我已尝试过将createSquad方法中的x重新格式化为整数但我仍然无法获得的任何内容。
答案 0 :(得分：2)
您的for循环for (int x = 0; x <= squad.length; x++)应更改为for (int x = 0; x < squad.length; x++)
数组或基于0的Java，因此当x = 3且数组大小为3时，您得到ArrayIndexOutOfBoundsException。
尝试在IDE中使用调试器。