java 类的继承

package testpacknm;

import java.util.Scanner;
import testpacknm.testcnm;

class Another {
    String name;
}

public class testcnm extends Another {
    int salary;

    public static void main(String[] args){
        testcnm obj = new testcnm();
        obj.salary = ;
        obj.name = "Prakash";
        System.out.println("Name: " + obj.name);
        System.out.println("Salary: " + obj.salary);
    }

}

2

package testpacknm;

import java.util.Scanner;
import testpacknm.testcnm;

class Salary extends Details {
    public void SalaryMethod() {
        System.out.println("Calling the salary method");
    }
}

class Details {
    public void detailMethod() {
        System.out.println("Calling detail method");
    }
}

public class testcnm {
    public static void main(String[] args) {
        Salary sal = new Salary();
        sal.detailMethod();
        sal.SalaryMethod();
    }
}

3

package testpacknm;

import java.util.Scanner;
import testpacknm.testcnm;

public class testcnm {
    public static void main(String[] args) {
        Salary sal = new Salary();
        sal.detailMethod();
        sal.SalaryMethod();
        sal.data();
    }
}

class Salary extends Details {
    public void SalaryMethod() {
        System.out.println("Calling the salary method");
    }
}

class Details extends Database {
    public void detailMethod() {
        System.out.println("Calling detail method");
    }
}

class Database {
    public void data() {
        System.out.println("Callind database method");
    }
}

4

/**
 * Written for 'JavaDump' Android Application
 */
// Hierarchical Inheritance Example
public class Employee {
    public static void main(String[] args) {
        Salary sal = new Salary();
        // sal.detailMethod(); //throws error
        sal.SalaryMethod();
        sal.data();
    }
}

class Salary extends Database {
    public void SalaryMethod() {
        System.out.println("Calling the salary method");
    }
}

class Details extends Database {
    public void detailMethod() {
        System.out.println("Calling detail method");
    }
}

class Database {
    public void data() {
        System.out.println("Callind database method");
    }
}

OUTPUT:
Calling the salary method
Callind database method