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Commit a18a196

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AkarshESAkarshES
committed
Week15
1 parent 1a26d39 commit a18a196

26 files changed

Lines changed: 3939 additions & 0 deletions

‎Downcasting.java‎

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class A
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{
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int a;
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public A()
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{
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a = 5;
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}
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public void disp()
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{
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System.out.println(a);
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}
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}
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class B extends A
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{
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int b;
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public B()
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{
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super();
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b = 10;
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}
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public void disp()
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{
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System.out.println(b);
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}
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}
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public class Downcasting
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{
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public static void main(String []args)
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{
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A a = new A();
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B b = new B();
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b = (B)a;
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a.disp();
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b.disp();
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}
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}

‎ExtendinJava.java‎

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class A
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{
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int a;
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public void func1()
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{
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System.out.println("Hello");
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}
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}
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class B extends A
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{
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@Override
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public void func1()
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{
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System.out.println("Hai");
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}
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}
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class ExtendinJava
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{
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public static void main(String []args)
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{
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final int b = 100;
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System.out.println(b);
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B obj = new B();
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//b = 2000;//Not possible
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System.out.println(b);
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obj.func1();
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}
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}

‎Prog3.java‎

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public class Prog3
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{
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public static void main(String [] args)
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{
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int a[] = {1,2,3,4,5};
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int b[] = new int[a.length];
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System.out.print("A: ");
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for (int num:a)
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System.out.print(num+" ");
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for (int i=0;i<a.length;i++)
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b[i] = a[i];
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System.out.println();
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System.out.print("B: ");
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for (int num:b)
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System.out.print(num+" ");
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System.out.println();
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}
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}

‎Prog3_2.java‎

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public class Prog3_2
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{
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public static void main(String [] args)
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{
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char [] copyFrom = {'a','e','i','o','u'};
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char [] copyTo = new char[copyFrom.length];
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System.arraycopy(copyFrom,2,copyTo,0,copyFrom.length-2);
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System.out.println(new String(copyTo));
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}
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}

‎TypeErasure.java‎

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import java.util.HashMap;
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import java.util.Map;
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public class TypeErasure
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{
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public static void main(String []args)
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{
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Map<String,String> languageMap = new HashMap<String,String>();
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languageMap.put("1954","Fortran");
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languageMap.put("1958","LISP");
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String lang = languageMap.get("1954");
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System.out.println("our fav. lang. is not "+lang);
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}
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}

‎Var_Args.java‎

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public class Var_Args
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{
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public static void main(String [] args)
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{
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test(215,"India","Delhi");
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test(417,"United States","New York","California");
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}
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public static void test(int Some,String...args)
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{
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System.out.print(" "+Some);
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for (String arg:args)
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{
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System.out.print(","+arg);
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}
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System.out.println();
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}
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}

‎Var_Args.py‎

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def test_var_args(farg,*args):
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print "Formal Args:",farg
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for arg in args:
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print "another_arg:",arg
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test_var_args(1,'Two',3)

‎Var_Args2.py‎

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def test_var_args(farg,*args,**kwargs):
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print "Formal Args:",farg
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for arg in args:
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print "another_arg:",arg
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print kwargs
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test_var_args(1,'Two',3)

‎arg_kwarg.py‎

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def test_arg_kwarg(farg,*args,**kwargs):
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print 'Formal Arg:',farg
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for arg in args:
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print 'Arg:',arg
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for kwarg in kwargs:
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print kwarg,'=',kwargs[kwarg]
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test_arg_kwarg(1,'Two',three = 'Three')

‎diamond.cc‎

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#include<iostream>
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using namespace std;
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class A
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{
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public:int idata;
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public:A()
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{idata = 10;}
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};
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class B:virtual public A
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{};
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class C:virtual public A
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{};
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class D:public B,public C
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{
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public:
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int getData()
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{
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return idata;
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}
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};
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int main()
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{
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D *d = new D();
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cout<<d->getData();
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}

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