Java中如何把两个数组合并为一个

Java中如何把两个数组合并为一个

import java.util.Arrays;

//Java中如何把两个数组合并为一个
public class gog {
public static void main(String[] args) {
String [] str1 = {"J","a","v","a","中"};
String [] str2 = {"如","何","把","两","个","数","组","合","并","为","一","个"};

int strLen1=str1.length;//保存第一个数组长度
int strLen2=str2.length;//保存第二个数组长度
str1= Arrays.copyOf(str1,strLen1+ strLen2);//扩容
System.arraycopy(str2, 0, str1, strLen1,strLen2 );//将第二个数组与第一个数组合并
System.out.println(Arrays.toString(str1));//输出数组

}
}

 static Object[] merge(Object[] a1, Object[] a2) {
  Object[] a3 = new Object[a1.length + a2.length];
  System.arraycopy(a1, 0, a3, 0, a1.length);
  System.arraycopy(a2, 0, a3, a1.length, a2.length);
  return a3;
 }