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Exception in thread "main" java.lang.Error: Unresolved compilation problem: [message #1835626]

Wed, 09 December 2020 02:43

Michael C Smith Jr

Messages: 2
Registered: December 2020

Junior Member

package calcengine;

public class Calcengine {
//block statements & switch statements, loops arrays//
public static void main(String[] args) {
double[] leftVals = {100.0d, 25.0d, 225.0d, 11.0d};
double[] rightVals = {50.0d, 92.0d, 17.0d, 3.0d};
char[]opCodes = {'d', 'a', 's', 'm'};
double [] results = new double [opCodes.length];

if (args.length == 0) {
for(int i = 0;i < opCodes.length; i++) {
results[i]= execute(opCodes[i], leftVals[i], rightVals[i]);
}
for(double currentResult : results)
System.out.println(currentResult);
} else if(args.length == 3)
handleCommandLine(args);
else
System.out.println("Please provide an operation code and 2 numeric values");
}

private static void handleCommandLine(String[] args) {
char opCode = args[0].charAt(0);
double leftVal = Double.parseDouble(args[1]);
double rightVal = Double.parseDouble(args[2]);
double result = execute(opCode, leftVal, rightVal);
System.out.println(result);

}

static double execute(char opCode, double leftVal, double rightVal) {
double result;
switch(opCode) {
case 'a':
result = leftVal + rightVal;
break;

case 's':
result = leftVal - rightVal;
break;

case 'm':
result = leftVal * rightVal;
break;

case 'd':
result = rightVal != 0? leftVal / rightVal : 0.0d;
break;

default:
System.out.println("Invalid opCode: " + opCode);
result =0.0d;
break;
}
return result;
}

Syntax error insert "}" to complete ClassBody -I don't know why I am seeing this error

I receive the error Exception in thread "main" java.lang.Error: Unresolved compilation problem:

at calcengine.Calcengine.main(Calcengine.java:5)

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Re: Exception in thread "main" java.lang.Error: Unresolved compilation problem: [message #1835638 is a reply to message #1835626]

Wed, 09 December 2020 09:45

Thomas Wolf

Messages: 576
Registered: August 2016

Senior Member

The error is shown because the source is lacking a final "}", as the error message says.

You then tried to run the code anyway, and then you correctly got the exception.

You should have seen error markers in Eclipse, and you should have gotten a warning dialog when trying to run this via Eclipse that told you that there were still compilation problems.

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