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Variable cannot be resolved in an If-Statement


Variable cannot be resolved in an If-Statement

By : user2950634
Date : November 17 2020, 11:55 AM
Hope that helps Each variable (amongst other 'parts' of java) has a scope, in which it is available. The scope is usually the block in which the variable is declared.
Block: http://docs.oracle.com/javase/tutorial/java/nutsandbolts/expressions.html
code :
    if (a%i == 0 && b%i == 0){                       // Start of Block/Scope
        ArrayList factor = new ArrayList<Integer>(); // Declaration, you can access factor now
        factor.add(i);  
    }                                                // End of Block/Scope, factor inaccessible
    else if (a%i <= 1 || b%i <= 1){
        Collections.sort(factor);
        List<Integer> topnum = factor.subList(factor.size() - 1, factor.size());

    }
public static int greatestCommonFactor(int a, int b){
    int i = 1 ;
    while (i >= 1 ){
        i++;
    }
    ArrayList<Integer> factor = new ArrayList<Integer>();
    if (a%i == 0 && b%i == 0){
        factor.add(i);  
    }
    else if (a%i <= 1 || b%i <= 1){
        Collections.sort(factor);
        List<Integer> topnum = factor.subList(factor.size() - 1, factor.size());

    }
    return topnum;
}


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Why Java variable cannot be resolved inside an IF Statement?

Why Java variable cannot be resolved inside an IF Statement?


By : coolcoolcoolcool
Date : March 29 2020, 07:55 AM
may help you . You restricted the scope of the the variable cssClassContainer
You might want
code :
<%
    String cssClassContainer=""; // or null
    if (group.isControlPanel()) {
         cssClassContainer = "container";
    } else {
         cssClassContainer = "container-fluid";
    }
%>
 String cssClassContainer = group.isControlPanel()? "container" : "container-fluid";
Basic Android Project: alternating cannot be resolved or is not a field/R cannot be resolved into a variable errors

Basic Android Project: alternating cannot be resolved or is not a field/R cannot be resolved into a variable errors


By : user2210811
Date : March 29 2020, 07:55 AM
hop of those help? This solution may, first and foremost, demonastrate how green I am with Android programming but I believe I found the solution.
Initially following the Android Developer Tutorial, I downloaded the latest versions - 18, 19, 20, etc. When I was creating the project, however, I was specifying much early versions for compatibility; all the way down to 7 or 8. I looked into this because I remembered seeing a message from the IDE regarding the Action Bar and how some commands weren't supported on Version X.
My boolean variable could not be resolved into a variable in my while statement

My boolean variable could not be resolved into a variable in my while statement


By : user2425598
Date : March 29 2020, 07:55 AM
this will help error3 is defined inside the do scope. Move its declaration outside the do scope and set the value inside:
code :
    boolean error3 = false;
    do {
        String Choice = input.nextLine();
        String Balance = "Balance";
        String Game = "Game";
        input.close();

        boolean error1 = ! new String(Choice).equals(Game);
        boolean error2 = ! new String(Choice).equals(Balance);
        error3 = error2 || error1; 
while(error3);
variable cannot be resolved ( variable used in if else statement)

variable cannot be resolved ( variable used in if else statement)


By : Mayur Bhatia
Date : March 29 2020, 07:55 AM
this one helps. The problem is with your implementation. As you see you define k in the start. But the interesting part is you define it as nothing:
code :
int k;
double a = 2.1223 ;
int b = (int) a ;

if(a-b > 0.5) { 
    k = b + 1;
}

else { 
    k = b; //No casting needed
}

System.out.println(k); 
Java "Variable Name" Can't be resolved, Error with Variable in IF Statement

Java "Variable Name" Can't be resolved, Error with Variable in IF Statement


By : teukumuhammad parisl
Date : March 29 2020, 07:55 AM
hope this fix your issue , You are defining test2 inside this block -
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