[JAVA] ch05-16. 생성자

 

public class Ex16 {
    Data1 d1 = new Data1();
    Data2 d2 = new Data2();
    Data2 d3 = new Data2(3);
}

class Data1{
    int value;
}

class Data2{
    int value;
    
    Data2(){
        value = 100;
    }
    
    Data2(int x){
        value = x;
    }
}