Java语言程序设计课程实验题目 第三次实验

 

1. 在IDE中输入以下代码，观察运行结果，并说明该段程序的作用。

public class MultiplicationTable {

         public static void main(String[] args) {

                   System.out.println(“                           Multiplication Table”);

                   System.out.print(“            ”);

                   for(int j = 1; j <= 9; j++)

                            System.out.print(“            ” + j);

                   System.out.println(“\n---------------------------------------------------------------------”);

 

                   for(int i = 1; j <= 9; i++){

                            System.out.print(i + “ | ”);

                            for(int j = 1; j <= 9; j++){

                                     System.out.printf(“%4d”, i * j);

}

System.out.println();

}

         }

}

 

2. 在IDE中输入以下代码，观察运行结果，并说明该段程序的作用。

public class TestSum{

         public static void main(String[] args){

                   float sum = 0;

                   for(float i = 0.01f; i <= 1,0f; i = i +0.01f)

                            sum += i;

                   System.out.println(“The sum is ” + sum);

         }

}

 

3. 在IDE中输入