Report#5$B!'(B

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/*$B%m!<%+%k!"%/%i%93FJQ?t$NHO0O$N3NG'(B*/
class Demo {
    int a = 10;   

    void Demo1(){                            /* Demo1$B!A(B2$B$^$G%m!<%+%kJQ?t$N(Ba */
        int a = 2;
        System.out.println("a of Demo1 is " + a);
    }
    void Demo2(){
        int a = 5;
        System.out.println("a of Demo2 is " + a);
    }
    void Demo3(){                            /*$B%/%i%9JQ?t$N(Ba$B$r;HMQ(B*/
        System.out.println("a of class Demo is " + a);
    }
}
public class Rep5a {
    public static void main(String args[]){
        int a = 20;                         /*main$B%a%=%C%I$G$NJQ?t(Ba$B$N@k8@(B*/
        Demo obj = new Demo();
        obj.Demo1();
        obj.Demo2();
        obj.Demo3();
        System.out.println("a of main method is " + a);
    }
}

****$B%=!<%9$N

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/*$B%3%s%9%H%i%/%?$H(Bstatic$B%$%K%7%c%i%$%:$N9M;!MQ%W%m%0%i%`!#(B*/

class Construct {     /*$B0z?t$N?t$r(B3$BDL$j$N%3%s%9%H%i%/%?$r:n@.$7!"F0$-$r8+$k(B*/
    int sum;
    static {         /*static$B%$%K%7%c%i%$%6$NDj5AItJ,!#(B*/
        System.out.println("initialize");
    }
    Construct() {
        sum = 10;
        System.out.println("You choice first type of constructer");
    }
    Construct(int a) {
        sum = a;
        System.out.println("You choice second type of constructer");
    }
    Construct(int b ,int c) {
        sum = b * c;
        System.out.println("You choice third type of constructer");
    }
    void printsum() {       /*$B%3%s%9%H%i%/%?$N;\$7$?=i4|2=$N>uBV$NI=<((B*/
        int e = sum;
        System.out.println("Result is => " + e);
    }
}
    public class Rep5b {
        public static void main(String args[]) {
            Construct obj1 = new Construct();   /*$B0z?t$J$7$N%3%s%9%H%i%/%?(B*/
            obj1.printsum();

            Construct obj2 = new Construct(50); /*$B0z?t#1$D$N%3%s%9%H%i%/%?(B*/
            obj2.printsum();

            Construct obj3 =new Construct(10,50); /*$B0z?t#2$D$N%3%s%9%H%i%/%?(B*/
            obj3.printsum();
        }
    }

****$B%=!<%9$N=PNO7k2L(B****
[Yuta-AKAMINE:~/Javaworks] j03002% java Rep5b
initialize
You choice first type of constructer
Result is => 10
You choice second type of constructer
Result is => 50
You choice third type of constructer
Result is => 500
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/*$B7Q>5!&(Bsuper$B$N9M;!MQ%W%m%0%i%`(B*/

class Print {
    Print() {
        System.out.println("This is first constructer of superclass");
    }
    Print(int z) {
        if(z == 1)
        System.out.println("This is second constructer of superclass");
    }
    void Disp() {
        System.out.println("This is a pen");
    }
}


class Priceofpen extends Print {    /*extends$B%-!<%o!<%I$G%/%i%9$N3HD%$r@k8@(B*/
    int x;
    int y;
    int add;
    Priceofpen (int a,int b) {
        x = a;
        y = b;
        add = x+y;
    }
    void Disp() {          /*$B%a%=%C%I$N%*!<%P!<%i%$%I$r9T$&!#(B*/
        super.Disp();      /*$B%9!<%Q!<%/%i%9$N%a%=%C%I$N8F$S=P$7(B*/
        System.out.println("Price of pen is " + add);
    }
}

class Extra extends Print {
    Extra(){
           super(1);             /*$B%9!<%Q!<%/%i%9$N%3%s%9%H%i%/%?$N8F$S=P$7(B*/
    }
    void kakezan(int a,int b){
        super.Disp();
        System.out.println("a * b = " +a*b );
    }
}

public class Rep5c {
    public static void main(String args[]){
        Print obj1 = new Print(1);
        obj1.Disp();
        System.out.println(" ");

        Priceofpen obj2 = new Priceofpen(50,120);
        obj2.Disp();
        System.out.println(" ");

        Extra obj3 = new Extra();
        obj3.kakezan(5,9);
    }
}

****$B=PNO7k2L(B****
[Yuta-AKAMINE:~/Javaworks] j03002% java Rep5c
This is second constructer of super class
This is a pen
 
This is first constructer of super class
This is a pen
Price of pen is 170
 
This is second constructer of super class
This is a pen
a * b = 45
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