Complex number manipulation - Java Lab Program

Ex.no: 2 Complex number manipulation Date : Program classcomplexnumber { privateint a; privateint b; staticintobj_no=1; publiccomplexnumber(int a, int b)   { this.a=a; this.b=b; } public String getcomplexvalue()     { if(this.b<0)       { return a+""+b+"i";       } else       { return a+"+"+b+"i";       }     } public static intobjectno()     { returnobj_no++;     } public static String addition(complexnumber num1,complexnumber num2)     { int a1=num1.a+num2.a; int b1=num1.b+num2.b; if(b1<0)       { return a1+""+b1+"i";       } else       { return a1+"+"+b1+"i";       }      } public static String subtraction(complexnumber num1,complexnumber num2)      { int a1=num1.a-num2.a; int b1=num1.b-num2.b; if(b1<0)        { return a1+""+b1+"i";        } else        { return a1+"+"+b1+"i";        }       } public static String multiplication(complexnumber num1,complexnumber num2)       { int a1=num1.a*num2.a; int b1=num1.b*num2.b; int vi1=num1.a*num2.b; int vi2=num2.a*num1.b; int vi; vi=vi1+vi2; if(vi<0)         { return a1-b1+""+vi+"i";         } else         { return a1-b1+"+"+vi+"i";         }        }       } classcomplexdemo       { public static void main(String args[])         { complexnumber com1=new complexnumber(-2,-3); System.out.println("the object number is"+complexnumber.objectno()); System.out.println(com1.getcomplexvalue()); complexnumber com2=new complexnumber(-4,-5); System.out.println("the object number is"+complexnumber.objectno()); System.out.println(com2.getcomplexvalue()); System.out.println("addition of both           complexnumber are:"+complexnumber.addition(com1,com2)); System.out.println("subtraction of both complexnumber           are:"+complexnumber.subtraction(com1,com2)); System.out.println("multiplication of both complexnumber                            are:"+complexnumber.multiplication(com1,com2));        }      }

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