Java合並兩個數組為一個新數組

String[] a = new String[]；
String[] b = new String[]；

String[] c = new String[a.length+b.length]; 
//System.arraycopy(src,srcStartPosition,des,desStartPosition,要復制的長度)

System.arraycopy(a, 0, c, 0, a.length); 
System.arraycopy(b, 0, c, a.length, b.length); 

return c;