Java Exercise-006

Package com.java.learing;

Import Java.awt.TextField;

Import Java.io.File;

Import java.io.FileNotFoundException;

Import java.io.IOException;

Import Java.util.Scanner;

Import Javax.swing.plaf.synth.SynthStyle;

/**

* @author Yufeifei

* @version November 21, 2017 8:47:56

* Practice Harvesting:

* 1. The switch statement must be followed by a constant, and the default statement is executed if all cases are not met;

* 2, can combine multiple case, output a result;

* 3, ++i is first added in the assignment. i++ is first assigned to + +;

* 4, you can add a label in front of the For loop, the following can be used to exit the large cycle directly;

*/

/** using a switch statement to calculate the discount based on the message amount */

public class TestDemo13 {

public static void Main (String agrs[]) {

System.out.println ("Please enter your spending amount:");

Scanner scan = new Scanner (system.in);

Float money = scan.nextfloat ();//Amount

String rebate = "";//Discount

if (Money > 200) {

int grade = (int) money/200;//level

Switch (grade) {

Case 1:

Rebate = "95 percent";

Break

Case 2:

rebate = "90 percent";

Break

Case 3:

rebate = "85 percent";

Break

Case 4:

rebate = "80 percent";

Break

Default is used when the default statement is executed when all case statements do not satisfy the condition in the switch statement

Default

rebate = "Full 400 minus 40!" ";

Break

}

System.out.println ("Your total consumption amount is:" + money);

System.out.println ("You will enjoy" + rebate + "Offer! ");

}else{

SYSTEM.OUT.PRINTLN ("The amount you spend does not meet the discount requirements Oh ~");

}

}

}

/** determine the season for users to enter the month */

public class testdemo13{

public static void Main (String agrs[]) {

Scanner scan = new Scanner (system.in);//Create Scanner

System.out.println ("Please enter a month, I can tell you which season it belongs to:");//user input

int month = Scan.nextint ();//Receive user input month

Switch (month) {

Case 12:

Case 1:

Case 2:

System.err.println ("The month you entered belongs to winter. ");

Break

Case 3:

Case 4:

Case 5:

System.err.println ("The month you entered belongs to spring.") ");

Break

Case 6:

Case 7:

Case 8:

System.out.println ("The month you entered belongs to autumn.") ");

Default

System.out.println ("Do you have a" + month + "month?) ");

Break

}

}

}

/** loop through an array with a while loop statement and a self-increment operator */

public class testdemo13{

public static void Main (String agrs[]) {

Creating an array of birds

String[] aves = new string[]{"Egret", "Oriole", "Parrot", "Crow", "Magpie", "cuckoo", "Turtle Dove", "Lark"};

int index = 0;//Create an index variable

SYSTEM.OUT.PRINTLN ("There are a lot of birds in my garden, about including:");

while (Index < aves.length) {

System.out.println (aves[index++]);//after + + is the first value, in addition. Before + + is added first, in the value

}

}

}

/** terminating the loop body */

public class testdemo13{

public static void Main (String agrs[]) {

System.out.println ("\ n----------An example of a single-layer loop----------");

Create an array

string[] array = new string[]{"Egret", "Oriole", "Eagle", "Parrot", "Crow", "Eagle", "Magpie", "cuckoo", "Turtle Dove", "Lark"};

System.out.println ("Before you find the first eagle, tell me what the birds are.") ");

for (String String:array) {

if (String.Equals ("Eagle"))

Break

System.out.println ("There:" + string + "");

}

System.out.println ("\ n---------Terminal Double-cycle example---------");

int[][] myscores = new int[][]{{67,78,63,22,66},{55,68,78,95,44},{95,97,92,93,81}};

System.out.println ("Baby This exam results: \ n math \ t chinese \ \ \ \ \ \ \ \ \ \ \ \ \");

No1:for (int[] is:myscores) {//using a Tagged break statement, you can forcibly exit the multilayer loop

for (element variable x: Traverse object obj)

SYSTEM.ERR.PRINTLN (i + "t");

if (I < 60) {

SYSTEM.ERR.PRINTLN (i + "fail");

Break No1;

}

}

System.out.println ();

}

}

}

Java Exercise-006