Good evening all I have some posted code here for a fraction program in java.
Problem is it works only in Eclipse but i am having a hard time to run in it in Command line.
Here are the 2 parts of the programs
one is called Fraction and second one is Tester
Here is the code for Fraction
Code:
package fractions;
public class Fraction
{
// Constructor: sets numerator and denominator
public Fraction(int num, int denom) {
this.numerator=num;
this.denominator=denom;
}
// Methods
///////
// Returns object plus frac1
public Fraction add(Fraction frac1) {
int num=this.getNum();
int denom=this.getDenom();
// Check that we have the same denominator for both fractions
if (frac1.getDenom()!=denom)
{
int _denom=denom;
num*=frac1.getDenom();
denom*=frac1.getDenom();
frac1=frac1.mult(new Fraction(_denom,_denom));
}
num+=frac1.getNum();
return new Fraction(num,denom);
}
// Returns object minus frac1
public Fraction minus(Fraction frac1) {
int num=this.getNum();
int denom=this.getDenom();
// Check that we have the same denominator for both fractions
if (frac1.getDenom()!=denom)
{
int _denom=denom;
num*=frac1.getDenom();
denom*=frac1.getDenom();
frac1=frac1.mult(new Fraction(_denom,_denom));
}
num-=frac1.getNum();
return new Fraction(num,denom);
}
// Returns object times frac1
public Fraction mult(Fraction frac1) {
int num=this.getNum();
int denom=this.getDenom();
num*=frac1.getNum();
denom*=frac1.getDenom();
return new Fraction(num,denom);
}
// Returns object divided by frac1
public Fraction div(Fraction frac1) {
int num=this.getNum();
int denom=this.getDenom();
num*=frac1.getDenom();
denom*=frac1.getNum();
return new Fraction(num,denom);
}
// Returns numerator of frac1
public int getNum() { return this.numerator; }
// Returns denominator of frac1
public int getDenom() { return this.denominator; }
// Data members
private int numerator;
private int denominator;
}
Ok here is the code for Tester
Code:
package fractions;
public class Tester
{
public static void main(String[] args) {
Fraction frac1=new Fraction(1,3);
Fraction frac2=new Fraction(2,5);
Fraction fracAdd=frac2.add(frac1);
Fraction fracMinus=frac2.minus(frac1);
Fraction fracMult=frac2.mult(frac1);
Fraction fracDiv=frac2.div(frac1);
System.out.println(toString(frac2)+" + "+toString(frac1)+" = "+toString(fracAdd));
System.out.println(toString(frac2)+" - "+toString(frac1)+" = "+toString(fracMinus));
System.out.println(toString(frac2)+" * "+toString(frac1)+" = "+toString(fracMult));
System.out.println(toString(frac2)+" / "+toString(frac1)+" = "+toString(fracDiv));
}
public static String toString(Fraction frac) {
return frac.getNum()+"/"+frac.getDenom();
}
}
So that is that. it somewhat works in Eclipse but not in command line. So i am confused as to what it does not work work there. These are the error messages I get in command line on it
For when i got Javac and java Fraction this message i get for it in command line
Code:
Exception in thread "main" java.lang.NoClassDefFoundError: Fraction (wrong name: fractions/Fraction)
at java.lang.ClassLoader.defineClass1(Native Method)
at java.lang.ClassLoader.defineClassCond(ClassLoader.java:632)
at java.lang.ClassLoader.defineClass(ClassLoader.java:616)
at java.security.SecureClassLoader.defineClass(SecureClassLoader.java:141)
at java.net.URLClassLoader.defineClass(URLClassLoader.java:283)
at java.net.URLClassLoader.access$000(URLClassLoader.java:58)
at java.net.URLClassLoader$1.run(URLClassLoader.java:197)
at java.security.AccessController.doPrivileged(Native Method)
at java.net.URLClassLoader.findClass(URLClassLoader.java:190)
at java.lang.ClassLoader.loadClass(ClassLoader.java:307)
at sun.misc.Launcher$AppClassLoader.loadClass(Launcher.java:301)
at java.lang.ClassLoader.loadClass(ClassLoader.java:248)
When i javac Tester this is what i get as message
Code:
Tester.java:20: cannot find symbol
symbol : class Fraction
location: class fractions.Tester
public static String toString(Fraction frac) {
^
Tester.java:6: cannot find symbol
symbol : class Fraction
location: class fractions.Tester
Fraction frac1=new Fraction(1,3);
^
Tester.java:6: cannot find symbol
symbol : class Fraction
location: class fractions.Tester
Fraction frac1=new Fraction(1,3);
^
Tester.java:7: cannot find symbol
symbol : class Fraction
location: class fractions.Tester
Fraction frac2=new Fraction(2,5);
^
Tester.java:7: cannot find symbol
symbol : class Fraction
location: class fractions.Tester
Fraction frac2=new Fraction(2,5);
^
Tester.java:9: cannot find symbol
symbol : class Fraction
location: class fractions.Tester
Fraction fracAdd=frac2.add(frac1);
^
Tester.java:10: cannot find symbol
symbol : class Fraction
location: class fractions.Tester
Fraction fracMinus=frac2.minus(frac1);
^
Tester.java:11: cannot find symbol
symbol : class Fraction
location: class fractions.Tester
Fraction fracMult=frac2.mult(frac1);
^
Tester.java:12: cannot find symbol
symbol : class Fraction
location: class fractions.Tester
Fraction fracDiv=frac2.div(frac1);
^
9 errors
So thank you all for taking the time to go over this. It is whacking my mind that it works in one spot but not that other, feel free to run this yourself to see what i mean.
Thanks all. and thanks for all feedback.
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