所以我创建了这个程序，假设比较两个矩形，一个参考矩形和一个测试矩形来检查测试是否在参考中，或者测试是否与参考重叠，或者它们是否共享边界，或者如果他们是不同的。
我的程序必须首先读取参考矩形然后读取测试矩形，但是在程序完成后，用户应该能够选择是重复整个程序还是输入新的参考矩形或者只重复其中的部分他们进入测试矩形。
我创建了一个大型引用while循环，它包含第二个while循环测试，并使它们具有不同的repeatInt变量。我不确定我的问题在哪里，因为当用户输入2时，程序正确地重新启动测试矩形输入部分，但是当它们输入1时，程序再次在测试输入部分重新启动时它应该返回到参考的开头输入部分并再次运行整个程序。
这是我的代码：
import java.util.Scanner;
public class TestMyRectangle2D {
public static void main(String[] args) {
Scanner in = new Scanner(System.in);
MyRectangle2D refrec = new MyRectangle2D();
MyRectangle2D testrec = new MyRectangle2D();
double refx;
double refy;
double refwidth;
double refheight;
double testx;
double testy;
double testwidth;
double testheight;
double pointx;
double pointy;
int repeatInt = 1;
int repeatInt2 = 1;
boolean ContinueRefWidthLoop = true;
boolean ContinueRefHeightLoop = true;
boolean ContinueTestWidthLoop = true;
boolean ContinueTestHeightLoop = true;
System.out.println("This program will ask you to enter the center coordinates, height, and width of the reference rectangle which will be the reference for the following comparisons with an additional test rectangle and test point. The program will be able to tell you if the point you enter is within the reference rectangle, it will also test the test rectangle to see if it is either contained, overlapping, abut, or distinct with the reference rectangle");
//Reference loop for rectangle
while(repeatInt == 1){
System.out.println("Please enter a numerical value for the reference rectangle's center x coordinate");
refx = in.nextDouble();
refrec.setX(refx);
System.out.println("Please enter a numerical value for the reference rectangle's center y coordinate");
refy = in.nextDouble();
refrec.setY(refy);
do{
try {
System.out.println("Please enter a numerical value for the reference rectangle's width");
refwidth = in.nextDouble();
refrec.setWidth(refwidth);
ContinueRefWidthLoop = false;
}
catch (Exception e){
System.out.println(refrec.getErrorMessage());
ContinueRefWidthLoop = true;
}
} while (ContinueRefWidthLoop);
do{
try{
System.out.println("Please enter a numerical value for the reference rectangle's height");
refheight = in.nextDouble();
refrec.setHeight(refheight);
ContinueRefHeightLoop = false;
}
catch (Exception e){
System.out.println(refrec.getErrorMessage());
ContinueRefHeightLoop = true;
}
}while(ContinueRefHeightLoop);
while(repeatInt2 == 1){
System.out.println("Please enter a numerical value for the test rectangle's center x coordinate");
testx = in.nextDouble();
testrec.setX(testx);
System.out.println("Please enter a numerical value for the test rectangle's center y coordinate");
testy = in.nextDouble();
testrec.setY(testy);
do {
try{
//Testing loop for test point and rectangle
System.out.println("Please enter a numerical value for the test rectangle's width");
testwidth = in.nextDouble();
testrec.setWidth(testwidth);
ContinueTestWidthLoop = false;
}
catch (Exception e){
System.out.println(testrec.getErrorMessage());
ContinueTestWidthLoop = true;
}
} while(ContinueTestWidthLoop);
do{
try{
System.out.println("Please enter a numerical value for the test rectangle's height");
testheight = in.nextDouble();
testrec.setHeight(testheight);
ContinueTestHeightLoop = false;
}
catch (Exception e){
System.out.println(testrec.getErrorMessage());
ContinueTestHeightLoop = true;
}
}while(ContinueTestHeightLoop);
//takes in the test point coordinates
System.out.println("Please enter a numerical value for the test point's x coordinate");
pointx = in.nextDouble();
System.out.println("Please enter a numerical value for the test point's y coordinate");
pointy = in.nextDouble();
//perform all the checks the entered point and rectangle against the reference rectangle
//checks if test point within reference rectangle
System.out.println("The reference rectangle's values; " + "\n" + "Center coordinates: (" + refrec.getX() + ", " + refrec.getY() + ")" + "\n" + "Width: " + refrec.getWidth() + "\n" + "Height is: "+ refrec.getHeight() + "\n" + "Area:" + refrec.getArea() + "\n" + "Perimeter: " + refrec.getPerimeter());
System.out.println("The test point coordinates are: (" + pointx + ", " + pointy + ")");
if(refrec.contains(pointx, pointy)){
System.out.println("----The test point is contained within the reference rectangle!");
}
else{
System.out.println("----The test point is not contained within the reference rectangle");
}
System.out.println("The test rectangle's values; " + "\n" + "Center coordinates: (" + testrec.getX() + ", " + testrec.getY() + ")" + "\n" + "Width is: " + testrec.getWidth() + "\n" + "Height is: "+ testrec.getHeight() + "\n" + "Area:" + testrec.getArea() + "\n" + "Perimeter: " + testrec.getPerimeter());
//checks if test rectangle is within the reference rectangle
if(refrec.contains(testrec)){
System.out.println("----The test rectangle is within the reference rectangle!");
}
else{
System.out.println("----The test rectangle is not within the reference rectangle");
}
//checks if test rectangle is overlapping the reference rectangle only if the test rectangle is not contained within the reference rectangle
if(refrec.overlaps(testrec)){
System.out.println("----The test rectangle is overlapping the reference rectangle!");
}
else{
System.out.println("----The test rectangle is not overlapping the reference rectangle");
}
//checks if test rectangle is sharing the boundary with the reference rectangle
if(refrec.abut(testrec)){
System.out.println("----The test rectangle is sharing a boundary with the reference rectangle!");
}
else{
System.out.println("----The test rectangle is not sharing a boundary with the reference rectangle");
}
//checks if test rectangle is distinct to the reference rectangle
if(refrec.distinct(testrec)){
System.out.println("----The test rectangle and the reference rectangle are distinct!");
}
else{
System.out.println("----The test rectangle and the reference rectangle are not distinct");
}
//program loop repeat
System.out.println("To reenter a new reference triangle enter 1, to reenter a new test point and new test rectangle enter 2, or to end the program altogether enter 0");
switch (in.nextInt()) {
case 1: {
repeatInt = 1;
break;
}
case 2: {
repeatInt2 = 1;
break;
}
default: {
repeatInt = repeatInt2 = 0;
}
}
}
}
}
}
非常感谢任何帮助，谢谢！
答案 0 :(得分：0)
repeatInt和reapeatInt2都设置为1，只有在用户选择结束程序时才会更改。您需要在选择重新启动时更改这些值。
switch (in.nextInt()) {
case 1: {
repeatInt = 1;
repeatInt2 = 0; // add this line here
break;
}
case 2: {
repeatInt2 = 1;
break;
}
default: {
repeatInt = repeatInt2 = 0;
}
}