json数据请求

public void test01(){
			String strResult="{"data":{"ack":"Y","documentCode":"TEST-171024-2002","errors":[],"trackNumber":"00340434185103578554"},"errorCode":"0","errorMsg":null}";
			
			System.err.println(1d);
			
			for(int i=0;i<6;i++){
				System.err.println(i);
				try {
					int a=i/0;
				} catch (Exception e) {
					e.printStackTrace();
				}
		}