子类构造函数是否会默认调用父类的无参构造函数

1 package test;
2 
3 public class TestB {
4     
5     public TestB() {
6         System.out.println("TestB的无参构造函数...");
7     }
8 
9 }

 1 package test;
 2 
 3 public class TestA extends TestB {
 4     
 5     public TestA(int i) {
 6         System.out.println(i);
 7     }
 8     
 9     public static void main(String[] args) {
10         TestA a = new TestA(1);
11     }
12 
13 }