java里java字符串数组合并成一个数组方法如下:
//方法一 Arrays类
String[] a = {"A","B","C"};
String[] b = {"D","E"};
// List
// List
// list.add("F"); --UnsupportedOperationException
// list.remove("A"); --UnsupportedOperationException
// list.set(1,"javaee");--OK (因为是把数组转为集合,其本质还是数组,数组长度固定不变,但内容可以改变)
// 结论:虽然可以把数组转为集合,但是集合长度不能改变
List list = new ArrayList(Arrays.asList(a));
list.addAll(Arrays.asList(b));
String[] str = new String[list.size()];
list.toArray(str);
for(int x=0;x System.out.print(str[x] + " "); } //方法二 循环遍历 // 两个数组合并 String[] str1 = {"Hello","world","java"}; String[] str2 = {"Veriable","syntax","interator"}; String[] newStr = new String[str1.length+str2.length]; //newStr = str1;数组是引用类型 for(int x=0;x newStr[x] = str1[x]; } for(int y=0;y newStr[str1.length+y]=str2[y]; } for(int y=0;y System.out.println(newStr[y] + " "); // 方法三 String[] str1 = {"Hello","world","java"}; String[] str2 = {"Veriable","syntax","interator"}; int str1Length = str1.length; int str2length = str2.length; str1 = Arrays.copyOf(str1, str1Length+str2length);//数组扩容 System.arraycopy(str2, 0, str1, str1Length, str2length); System.out.println(Arrays.toString(str1));