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myMethods.java
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myMethods.java
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import java.io.*;
public class myMethods
{
public static String readString()
{
String str = "";
char b;
try
{
for (int i = 0; (b = (char)System.in.read())!='\n'; i++)
{
str += b;
}
}
catch(IOException e)
{
System.out.println(e);
}
return str;
}
public static int readInt()
{
int num = 0;
try
{
num = Integer.parseInt(readString());
}
catch(NumberFormatException e)
{
e.toString();
}
return num;
}
public static double readDouble()
{
double num = 0;
try
{
do
{
if (num < 0)
{
System.out.println("This number cannot be negative!");
}
num = Double.parseDouble(readString());
}
while(num < 0);
}
catch(NumberFormatException e)
{
e.toString();
}
return num;
}
public static int choose(int lower, int upper)
{
int option;
do
{
option = readInt();
if ((option < lower)||(option > upper))
{
System.out.print("Invalid option. Try again.\n");
}
}
while((option < lower)||(option > upper));
return option;
}
public static String YNchoose()
{
System.out.print("y/n: ");
String option;
do
{
option = readString();
if (!(option.equals("y"))&&!(option.equals("n")))
{
System.out.print("\nInvalid option. Try again.\ny/n: ");
}
}
while(!(option.equals("y"))&&!(option.equals("n")));
return option;
}
}