public class Test {
/**
* @param args
*/
public static void main(String[] args) {
List<String> lista = new ArrayList<String>();
List<String> listb = new ArrayList<String>();
Test tt = new Test();
listb.add("123456");
tt.tl(lista, listb);
System.out.println(lista.size());
System.out.println(listb.size());
}
public void tl(List<String> a,List<String> b){
a = b;
System.out.println(a == b);
}
打印结果
true
0
1