20165219 2017-2018-2 "Java programming" a first week summary of pair programming

20165219 2017-2018-2 "Java programming" pair programming first week summary pair object

20165219 Wang Yanbo

20165232 He Yanda

Demand analysis

Implement a program that requires:

1 Support for integer operations

2 support for multi-operator operations

3 support fractional operation, support true fractional operation

3 statistic correct rate

Expansion requirements:

Design ideas

This is a program that needs to support complex operations, unlike simple single-operator arithmetic, you need to design multiple classes to implement operations such as subtraction and squared operations.

NML Chart (partial)

Code Progress

Integer Calculation class

public class IntNumber {    private int A;    public int getA(){        return A;    }    public IntNumber(int A){        this.A = A;    }    public int add(IntNumber op1){        int sum = A + op1.A;        System.out.print(A + " + " + op1.A + "=");        return sum;    }    public int subtract(IntNumber op1){        int num = A - op1.A;        System.out.print(A + " - " + op1.A + "=");        return num;    }    public int multiply(IntNumber op1){        int num = A * op1.A;        System.out.print(A + " * " + op1.A + "=");        return num;    }    public static IntNumber obj(){        Random ran = new Random();        return new IntNumber(ran.nextInt(20)-10);    }    public String divide(Score op1){        System.out.print(op1.getNumerator() + " / " + op1.getDenominator() + "=");        return op1.toString();    }}

Code Cloud Hosting

Function

Test of normal boundary anomaly

Knot to feel

Pair learning or need to have a clear division of labor to play a multiplier effect, through this week's knot to learn, you can feel the effect of 1+1>2.

20165219 2017-2018-2 "Java programming" a first week summary of pair programming