我有一个名为processClaims()的方法，它通过询问需要声明多少个文件来获取用户的输入。方法如下所示。
public void processClaims() {
int size = 0, j = 0, k = 0;
String suffix = " ", aClaim = " ";
System.out.println("How many claims will be filed?");
size = input.nextInt();
while (size <= 0) {
System.out.println("Invalid integer! Re-enter the number of claims to be filed: ");
size = input.nextInt();
}
EarthquakeInsurance[] claims = new EarthquakeInsurance[size];
for (int i = 0; i >= 0; i++) {
j = (i + 1) % 10;
k = (i + 1) % 100;
suffix = j == 1 && k != 11 ? "st" :
j == 2 && k != 12 ? "nd" :
j == 3 && k != 13 ? "rd" : "th";
claims[i] = new EarthquakeInsurance();
if (i > 0) {
System.out.println("Is this " + i + suffix + " claim for the same property owner? 'Y' or 'N': ");
cont = input.next().charAt(0);
if (cont == 'n' || cont == 'N') {
claims[i].setInsured();
}
else{
claims[i].setInsured(claims[i].getInsured());
}
}
else
{
claims[i].setInsured();
claims[i].setHomeInsVal();
claims[i].setRichter();
}
input.nextLine();
aClaim = String.format("%n%nPAYOUT FOR EARTHQUAKE DAMAGE"
+ "%n%nHomeowner: %S"
+ "%n%nDate: %tD"
+ "%nTime: %tr%n"
+ "%n%-52s %4s $%,20.2f"
+ "%nDeductible %47s %,20.2f"
+ "%n%46s TOTAL %4s $%,20.2f%n",
claims[i].getInsured(), dateTime, dateTime, claims[i].getMessage(), " ",
claims[i].getPayout(), " ",
claims[i].getDeductible(), " ",
" ", claims[i].getPayout() +
claims[i].getDeductible());
aClaim += claimsReport;
for ( EarthquakeInsurance eachClaim : claims);
System.out.println(claims);
}
}
我认为问题出在数组或for循环上。如下所示的输出是不正确的
[LInsuranceSystem$EarthquakeInsurance;@548c4f57
如果这是错误的，这里是整个代码，我有问题调试这个
import java.io.File;
import java.io.FileNotFoundException;
import java.io.PrintWriter;
import java.util.ArrayList;
import java.util.Calendar;
import java.util.Scanner;
public class Slack
{
public static void main(String[] args) throws FileNotFoundException {
InsuranceSystem insuranceSystem = new InsuranceSystem();
insuranceSystem.start();
}
}
class InsuranceSystem {
Scanner input = new Scanner(System.in);
Calendar dateTime = Calendar.getInstance();
ArrayList<String> claimsReport = new ArrayList<>();
EarthquakeInsurance[] claims;
String fileName = " ";
char cont = ' ', correct = ' ';
public InsuranceSystem() {
}
public void start() throws FileNotFoundException {
System.out.println("MUTUALLY ACCIDENTAL INC.");
System.out.println("Do you want an analysis of earthquake coverage for your property? Enter 'Y' or 'N': ");
cont = input.next().charAt(0); //reads user input from input and applies to it var cont
input.nextLine(); //clears buffer
if (cont == 'y' || cont == 'Y') {
processClaims();
writeClaimsRecords();
checkInputFile();
}
printThankYou();
}
public void processClaims() {
int size = 0, j = 0, k = 0;
String suffix = " ", aClaim = " ";
System.out.println("How many claims will be filed?");
size = input.nextInt();
while (size <= 0) {
System.out.println("Invalid integer! Re-enter the number of claims to be filed: ");
size = input.nextInt();
}
EarthquakeInsurance[] claims = new EarthquakeInsurance[size];
for (int i = 0; i >= 0; i++) {
j = (i + 1) % 10;
k = (i + 1) % 100;
suffix = j == 1 && k != 11 ? "st" :
j == 2 && k != 12 ? "nd" :
j == 3 && k != 13 ? "rd" : "th";
claims[i] = new EarthquakeInsurance();
if (i > 0) {
System.out.println("Is this " + i + suffix + " claim for the same property owner? 'Y' or 'N': ");
cont = input.next().charAt(0);
if (cont == 'n' || cont == 'N') {
claims[i].setInsured();
}
else{
claims[i].setInsured(claims[i].getInsured());
}
}
else
{
claims[i].setInsured();
claims[i].setHomeInsVal();
claims[i].setRichter();
}
input.nextLine();
aClaim = String.format("%n%nPAYOUT FOR EARTHQUAKE DAMAGE"
+ "%n%nHomeowner: %S"
+ "%n%nDate: %tD"
+ "%nTime: %tr%n"
+ "%n%-52s %4s $%,20.2f"
+ "%nDeductible %47s %,20.2f"
+ "%n%46s TOTAL %4s $%,20.2f%n",
claims[i].getInsured(), dateTime, dateTime, claims[i].getMessage(), " ",
claims[i].getPayout(), " ",
claims[i].getDeductible(), " ",
" ", claims[i].getPayout() +
claims[i].getDeductible());
aClaim += claimsReport;
for ( EarthquakeInsurance eachClaim : claims);
System.out.println(claims);
}
}
public void writeClaimsRecords() throws FileNotFoundException
{
String record = " ";
Scanner input = new Scanner(System.in);
System.out.println("Enter the file name for the claims' records (WARNING: This will erase a pre-existing file!): ");
fileName = input.nextLine();
PrintWriter outputFile = new PrintWriter(fileName);
for(int i = 0; i < claims.length; i++){
record = String.format("%s, %f, %f%n", claims[i].insured, claims[i].homeInsVal, claims[i].richter);
}
outputFile.printf(record);
outputFile.close();
System.out.println("Data written to the" + fileName + " file.");
}
public void checkInputFile() throws FileNotFoundException {
String fileRecord = " ";
File file = new File("Claims.txt");
Scanner inputFile = new Scanner(file);
while (inputFile.hasNext()) {
fileRecord = inputFile.nextLine();
System.out.println(fileRecord);
System.out.println("");
inputFile.close();
}
}
public void printThankYou() {
System.out.println("Thank you for using the Earthquake Coverage Analyzer.");
}
class EarthquakeInsurance {
//STUDENTS INSERT LINE COMMENTS DESCRIPTIVE OF THE PURPOSE OF EACH VARIABLE.
private String insured;
private String coverage;
private String message;
private double homeInsVal;
private double richter;
private double payout;
private double deductible;
private Scanner input = new Scanner(System.in);
private boolean repeat;
private char correct;
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public EarthquakeInsurance() {
}//END Default Constructor
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public EarthquakeInsurance(String insured, double homeInsVal, double richter) {
setInsured(insured);
setHomeInsVal(homeInsVal);
setRichter(richter);
}//END EarthquakeInsurance(String, double, double)
/**
* STUDENTS CODE copy() AND PROVIDE METHOD BOX COMMENTS.
*/
public String copy() {
String insuranceObj = " ";
return insuranceObj;
}
/**
* STUDENTS CODE equals AND PROVIDE METHOD BOX COMMENTS.
*/
public boolean equals(String aClaim) {
boolean isEqual = false;
if (isEqual = false) {
isEqual = true;
}
return isEqual;
}
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public final void setInsured(String insured) {
this.insured = insured;
}//END setInsured(String): final void
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public final void setHomeInsVal(double homeInsVal) {
this.homeInsVal = homeInsVal;
}//END setHomeInsVal(double): final void
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public final void setRichter(double richter) {
this.richter = richter;
}//END setRichter(double): final void
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public void setInsured() {
String insuredCopy = null, first = null, last = null;
int indexOfSpace = 0;
do {
System.out.printf("%nMUTUALLY ACCIDENTAL, INC."
+ "%nEarthquake Coverage Analyzer"
+ "%n%nPlease enter your name: ");
insured = input.nextLine();
insuredCopy = new String(insured).replace(" ", "");
while (!isAlpha(insuredCopy)) {
System.out.printf("%nInvalid name! Please re-enter: ");
insured = input.nextLine();
insuredCopy = new String(insured).replace(" ", "");
}//while insured's name is NOT alphabetic
System.out.printf("%nYour Name: %s"
+ "%n%nIs this name correct? 'Y' or 'N': ",
insured);
correct = input.nextLine().toLowerCase().charAt(0);
repeat = correct == 'y' ? false : true;
} while (repeat); //do-while insured name is not correct
indexOfSpace = insured.indexOf(" "); //Locate where the space is in insured.
if (indexOfSpace > 0) {
first = Character.toUpperCase(insured.charAt(0))
+ insured.substring(1, indexOfSpace).toLowerCase();
last = Character.toUpperCase(insured.charAt(indexOfSpace + 1))
+ insured.substring(indexOfSpace + 2, insured.length()).toLowerCase();
insured = first + " " + last;
}//if there is more than one name, capitalize the first letter in each
else {
insured = Character.toUpperCase(insured.charAt(0))
+ insured.substring(1, insured.length()).toLowerCase();
}//else capitalize first letter of a single name
}//END setInsured(): void
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public void setHomeInsVal() {
do {
do {
System.out.printf("%nPlease enter the insured value of your home: ");
repeat = !input.hasNextDouble();
validateNumber();
} while (repeat); //END do-while repeats when homeInsVal is invalid
homeInsVal = input.nextDouble();
if (homeInsVal < 0) {
System.out.printf("%nThe insured value of your home cannot be less than or equal to 0.%n");
repeat = true;
}//END if homeInsVal less than zero then prompt again
else {
System.out.printf("%nHome's Insured Value: $%,.0f"
+ "%n%nIs this insured value correct? 'Y' or 'N': ",
homeInsVal);
correct = input.next().toLowerCase().charAt(0);
repeat = correct == 'y' ? false : true;
}//END else validate the correctness of insured value
} while (repeat); //END do-while repeats when homeInsVal is not correct
}//END setHomeInsVal(): final void
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public void setRichter() {
do {
do {
System.out.printf("%nRichter Scale Damage Assessment"
+ "%n 9.0+ Total destruction."
+ "%n 8.0 Most structures fell."
+ "%n 7.0 Many buildings destroyed."
+ "%n 6.0 Many buildings considerably damaged, some collapsed."
+ "%n 4.5 Damage to poorly constructed buildings."
+ "%n 3.5 Felt by many people, no destruction."
+ "%n 0 Generally not felt by people."
+ "%n%nPlease enter the Richter scale value for the earthquake: ");
repeat = !input.hasNextDouble();
validateNumber();
} while (repeat); //END do-while repeats when richter is invalid
richter = input.nextDouble();
if (richter < 0) {
System.out.printf("%nInvalid! Richter cannot be negative. Please re-enter.%n");
repeat = true;
}//END if richter less than zero then prompt again
else {
System.out.printf("%nRichter Scale: %.2f"
+ "%n%nIs this richter value correct? 'Y' or 'N': ",
richter);
correct = input.next().toLowerCase().charAt(0);
input.nextLine();
repeat = correct == 'y' ? false : true;
}//END else validate the correctness of richter
} while (repeat); //END do-while repeats when homeInsVal is not correct
testRichter();
}//END setRichter(): void
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
private void testRichter() {
if (richter >= 9.0) {
payout = homeInsVal * .90;
deductible = homeInsVal * .10;
message = "Total destruction.";
}//END if richter >= 9.0 else richter < 9.0
else if (richter >= 8.0) {
payout = homeInsVal * .80;
deductible = homeInsVal * .20;
message = "Most structures fell.";
}//END if richter >= 8.0 else richter < 8.0
else if (richter >= 7.0) {
payout = homeInsVal * .70;
deductible = homeInsVal * .30;
message = "Many buildings destroyed.";
}//END if richter >= 7.0 else richter < 7.0
else if (richter >= 6.0) {
payout = homeInsVal * .60;
deductible = homeInsVal * .40;
message = "Many buildings considerably damaged, some collapsed.";
}//END if richter >= 6.0 else richter < 6.0
else if (richter >= 4.5) {
payout = homeInsVal * .50;
deductible = homeInsVal * .50;
message = "Damage to poorly constructed buildings.";
}//END if richter >= 4.5 else richter < 4.5
else if (richter >= 3.5) {
payout = 0;
deductible = 0;
message = "Felt by many people, no destruction.";
}//END if richter >= 3.5 else richter < 3.5
else if (richter >= 0) {
payout = 0;
deductible = 0;
message = "Generally not felt by people.";
}//END if richter >= 0 else richter < 0
}//END testRichter(): void
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public String getInsured() {
return insured;
}//END getInsured(): int
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public double getHomeInsVal() {
return homeInsVal;
}//END getHomeInsVal(): double
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public double getRichter() {
return richter;
}//END getRichter(): double
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public double getPayout() {
return payout;
}//END getPayout(): double
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public double getDeductible() {
return deductible;
}//END getDeductible(): double
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public String getMessage() {
return message;
}//END getMessage(): String
/**
* STUDENTS ARE TO DESCRIBE WHAT'S GOING ON WITH THE CODE IN METHOD BOXES.
*/
public void validateNumber() {
if (repeat) //AS LONG AS THE INPUT IS "NOT" AN INTEGER OR DOUBLE
{
input.next(); //CONSUME NON-NUMERIC VALUE.
System.out.printf("%nWarning: You entered an invalid integer or "
+ "floating-point value.%n"); //RE-PROMPT
}//END if repeat when a number is an invalid type
}//END validateNumber(boolean): void
/**
* chars() returns the integer values of the characters in word.
* <p>
* allMatch determines whether the integer values for each character
* matches the predicate (criterion) that each character is a letter.
* <p>
* The :: is a method reference operator for calling isLetter from
* the Character class.
*
* @param word is the incoming String value to test.
* @return is true when the word is not empty and is alphabetic
* or false when it isn't.
*/
public final boolean isAlpha(String word) {
/* Test to see if the word is not empty AND if each letter
* in a word is an alphabetic character.
*/
return word != null && word.chars().allMatch(Character::isLetter);
}//END isAlpha(String): final boolean
}//END CLASS EarthquakeInsurance
}
错误1)
for ( EarthquakeInsurance eachClaim : claims);
删除半2)
错误
System.out.println(claims);
是你是打印整个列表
参见我如何打印我的Java对象没有得到"SomeType@2f92e0f4"?