Java applet 1 (2015-8-2)

1, from the keyboard input the side length of the square, to find the circumference and area of the square

Import Java.util.Scanner;

public class Test1 {

public static void Main (String []args) {

int c=0;

int s=0;

Scanner scan=new Scanner (system.in);

System.out.print ("side length of the square L:");

int L=scan.nextint ();

C=4*l;

S=l*l;

System.out.println ("The circumference of the square is:" +c+ "; the area of the square is:" +s);

}

}

2, from the keyboard input rectangular length, width, to find the circumference and area of the rectangle

Import Java.util.Scanner;

public class Test2 {

public static void Main (String []args) {

int c=0;

int s=0;

Scanner scan=new Scanner (system.in);

System.out.print ("Oblong long L:");

int L=scan.nextint ();

Scan.nextline ();

System.out.print ("Rectangular width w:");

int W=scan.nextint ();

c=2* (L+W);

S=l*w;

System.out.println ("The circumference of the rectangle is:" +c+ "; the area of the rectangle is:" +s);

}

}

3, enter 5 numbers from the keyboard, calculate the number of 5 and the product.

Import Java.util.Scanner;

public class Test3 {

public static void Main (String []args) {

Scanner scan=new Scanner (system.in);

System.out.print ("Please enter five number:");

Double a=scan.nextdouble ();

Double b=scan.nextdouble ();

Double c=scan.nextdouble ();

Double d=scan.nextdouble ();

Double e=scan.nextdouble ();

Double sum=a+b+c+d+e;

Double product=a*b*c*d*e;

System.out.println ("The sum of five data is:" +sum+ "\ n Five data of the product is:" +product);

}

}

4. Enter 3 numbers from the keyboard, an int type data, a double type, a float type data, and a sum of 3 numbers.

Import Java.util.Scanner;

public class Test {

public static void Main (String []args) {

Scanner scan=new Scanner (system.in);

System.out.print ("Integer Data:");

int A=scan.nextint ();

Scan.nextline ();

System.out.print ("Double-precision data:");

Double b=scan.nextdouble ();

Scan.nextline ();

System.out.print ("Floating-point data:");

float c=scan.nextfloat ();

Scan.nextline ();

System.out.println ("The sum of the three data is:" + (A+b+c));

}

}

5. Enter 3 numbers from the keyboard, an int type data, a double type, a float type data, and a sum of 3 numbers. (Note: The type to sum is of type int) (The conversion of the data type is used here)

Import Java.util.Scanner;

public class Test5 {

public static void Main (String []args) {

Scanner scan=new Scanner (system.in);

System.out.print ("Integer Data:");

int A=scan.nextint ();

Scan.nextline ();

System.out.print ("Double-precision data:");

Double b=scan.nextdouble ();

Scan.nextline ();

System.out.print ("Floating-point data:");

float c=scan.nextfloat ();

Scan.nextline ();

int sum= (int) (A+B+C);

System.out.println ("The sum of the three data is:" +sum);

}

}

Java applet 1 (2015-8-2)