不知道你这10个字母中是否能出现重复的字母！ import java.util.Random;import java.util.ArrayList;public class RandomChar{ public char[] Vowel = {'a', 'e', 'i', 'o', 'u'}; public String[] Consonant = {"b","c","d","f","g","h","j","k","l","m","n","p","q","r","s","t","v","w","x","y","z"}; public ArrayList Rusult = new ArrayList(); public RandomChar() { } public void getChar() { ArrayList VowelAL = new ArrayList(); ArrayList ConsonantAL = new ArrayList(); //VowelAL = genarate(Vowel[]); //ConsonantAL = genarate(Consonant[]); //下面两个for循环主要输初始化arrayList for(int i = 0; i < 21; i++ ) { ConsonantAL.add( Consonant[i] ); } for(int j = 0; j < 5; j++ ) { VowelAL.add( Vowel[j] ); } int randNum01; int randNum02; int randNum03; int randNum04; int rangeNum01 = 21; int rangeNum02 = 5; int ConsonantNum = 8; int VowelNum = 2;//这个是代表输出8个辅音的同时输出元音的个数 for(int i = 0; i< ConsonantNum; i++) { Random ran = new Random(System.currentTimeMillis()+i); randNum01 = ran.nextInt(rangeNum01); randNum02 = ran.nextInt(2); //randNum02主要是来控制是否输出元音， //这个数也是随机的因此在结果集中的位置就是随机的了 if(randNum02 == 1 && VowelNum !=0) { randNum03 = ran.nextInt(rangeNum02); System.out.print(VowelAL.get(randNum03)); Rusult.add(VowelAL.get(randNum03)); VowelAL.remove(randNum03);//通过remove语句将输出过的字符删除 VowelNum = VowelNum - 1;//元音已输出个数减一 rangeNum02 = rangeNum02 - 1;//同样随机数的范围减一 } System.out.print(ConsonantAL.get(randNum01)); Rusult.add(ConsonantAL.get(randNum01)); ConsonantAL.remove(randNum01);//通过remove语句将输出过的字符删除 rangeNum01 = rangeNum01 -1;//同样随机数的范围减一 } //判断是否已经输出2个字符，没有则在后面补充输入；这样的情况同样是随机的 if (VowelNum != 0) { for (int k = 0; k < VowelNum; k++) { Random ran = new Random(System.currentTimeMillis()); randNum04 = ran.nextInt(rangeNum02); System.out.print(VowelAL.get(randNum04)); Rusult.add(VowelAL.get(randNum04)); VowelAL.remove(randNum04); rangeNum02 = rangeNum02 -1; } } } public void PrintRes() { for(int i = 0; i < 10 ; i++) { System.out.println(Rusult.get(i)); } } public static void main(String str[]) { RandomChar rand = new RandomChar(); System.out.print("下面是getChar函数中的print输出的字符："); rand.getChar(); System.out.println(); System.out.println("下面是PrintRes函数中通过存储的Arraylist输出的字符："); rand.PrintRes(); }}