testid.java

来自「Java讲义与实例」· Java 代码 · 共 16 行

public class TestId{
	int personid;
	static int id;
	static {
		id=1;
				}
	public TestId(){
		personid=id++;
	}
	public static void main (String arg[]){
		TestId id1=new TestId();
		System.out.println(id1.personid);
		TestId id2=new TestId();
		System.out.println(id2.personid);
		}
	}