类/方法的java问题
所以我有一段代码,我正在为我的AP计算机科学课程学习,当我编译的时候,我得到了大量的错误,尽管当我看它的时候,它看起来很好,一切都正常。所有的错误都来自我的myClock课程和RepairShop课程
public class APCS_104_Time {
public static void main(String[] args) {
tester tester = new tester();
}
}
class myClock {
private int minute;
private int hour;
public myClock() {
hour = 2;
minute = 3;
}
public myClock(int minute, int hour) {
public int getHour() {
hour = IO.getInt("Enter the hour");
return hour;
}
public int getMinute() {
minute = IO.getInt("Enter the minute");
return minute;
}
public void int setMinute(int minute) {
this.minute = minute;
}
public void int setHour(int hour) {
this.hour = hour;
}
public String toString() {
if (minute < 10) {
return (hour + ":0" + minute);
}
else {
return (hour + ":" + minute);
}
}
}
}
class RepairShop {
public void int springForward(myClock time) {
hour++;
}
public void int resetClock(myClock time) {
hour = 2;
minute = 3;
}
public int cloneClock(myClock time) {
myClock copy = myClock myClock.clone();
return myClock;
}
}
class Tester {
Tester() {
myClock time = new myClock();
System.out.printf("The time is: " + myClock(2, 20));
}
}
错误消息包括:
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:38: error: illegal start of expression
public void int setMinute(int minute) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:38: error: illegal start of expression
public void int setMinute(int minute) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:38: error: ';' expected
public void int setMinute(int minute) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:38: error: '.class' expected
public void int setMinute(int minute) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:38: error: ';' expected
public void int setMinute(int minute) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:42: error: illegal start of expression
public void int setHour(int hour) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:42: error: illegal start of expression
public void int setHour(int hour) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:42: error: ';' expected
public void int setHour(int hour) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:42: error: '.class' expected
public void int setHour(int hour) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:42: error: ';' expected
public void int setHour(int hour) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:46: error: illegal start of expression
public String toString() {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:46: error: ';' expected
public String toString() {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:58: error: <identifier> expected
public void int springForward(myClock time) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:58: error: '(' expected
public void int springForward(myClock time) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:58: error: invalid method declaration; return type required
public void int springForward(myClock time) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:62: error: <identifier> expected
public void int resetClock(myClock time) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:62: error: '(' expected
public void int resetClock(myClock time) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:62: error: invalid method declaration; return type required
public void int resetClock(myClock time) {
^
C:\Users\Tom\Dropbox\Auriemma, Thomas\AP Comp Sci\Unit 1\APCS_104_Time.java:69: error: ';' expected
myClock copy = myClock myClock.clone();
# 1 楼答案
你需要解决很多问题:
首先
第二件事是,setter是
void
,不能是void
,并且int
,从这类方法中删除int
:第三件事是,hour是
myClock
中的一个属性,不能在其他类中使用:第四点是你需要遵循惯例。类名必须是大写的第一个字母。例如
myClock
->MyClock
还请参考此内容,以了解有关Java类的更多信息: https://docs.oracle.com/javase/tutorial/java/concepts/class.html
在解决了以上所有问题后,我相信您可以理解并修复代码。如果没有,就告诉我
希望这有帮助