How can errors be checked?

How can I fix the errors in my java program?

• I know it's not complete but I can't seem to understand or fix my errors. Any help would be greatly appreciated. Source Code: //All imports import java.util.Scanner; public class ass2 { //Creating two single-dimesional Arrays subNameArray = new String[]; subCodeArray = new String[]; public static String codeExists() { java.util.Scanner input = new Scanner(System.in); System.out.println("Please enter a subject Code to be checked?"); String posCode = input.next(); String currvalue = subCodeArray; return value; } //Main method public static void main(String[] args) { java.util.Scanner input = new Scanner(System.in); System.out.println("Do wish to add more subjects? true/false"); boolean moresubs = input.nextBoolean(); if (moresubs = true) { ass2.moreSubjects(subCodeArray, subNameArray); } else { System.out.println("Do You wish to check if a subject code is available? Y/N"); String availcode = input.next(); } boolean availcode; if (availcode = true) { ass2.codeExists(); } else { System.out.println("Do You wish to check if a subject code is valid? Y/N"); String validcode = input.next(); } } public static void moreSubjects(subCodeArray, subNameArray) { java.util.Scanner input = new Scanner(System.in); System.out.println("Please enter a subject name?"); String subName = input.next(); System.out.println("Please enter a subject code?"); String subCode = input.next(); int pos = 0; boolean more = true; while (more = true) if (subCodeArray != null and subNameArray != null) subCodeArray[pos] = subCode; subNameArray[pos] = subName; pos = pos + 1; else { pos = pos + 1; System.out.println("Do you want to enter another subject? true/false"); more = input.next(); } } public static String tostring() { } } Error Messages: Syntax Error on token "[", { expected after this token Syntax Error on token "and", . expected Syntax Error on token "else", delete this token Syntax Error on token "String", @ expected Syntax Error on token(s), misplaced construct(s) Value cannot be resolved to a variable Syntax Error on token ",", delete this token subNameArray cannot be resolved to a variable subCodeArray cannot be resolved to a variable subCodeArray cannot be resolved to a variable subCodeArray cannot be resolved to a type I'm using eclipse as my IDE and have Java 7 if that's relevant. Sorry for the length. Thanks in advance!!

• Answer:

  import java.util.Scanner; public class ass2 { //Creating two single-dimesional Arrays String []subNameArray = new String[]; String []subCodeArray = new String[]; public static String codeExists() { Scanner input = new Scanner(System.in); System.out.println("Please enter a subject Code to be checked?"); String posCode = input.next(); String currvalue = subCodeArray; <---- what do you really wants to do? return value; } public static void main(String[] args) { input = new Scanner(System.in); System.out.println("Do wish to add more subjects? true/false"); boolean moresubs = input.nextBoolean(); if (moresubs == true) { <- this should be == ass2.moreSubjects(subCodeArray, subNameArray); } else { System.out.println("Do You wish to check if a subject code is available? Y/N"); String availcode = input.next(); } boolean availcode; if (availcode == true) {<- this should be == ass2.codeExists(); } else { System.out.println("Do You wish to check if a subject code is valid? Y/N"); String validcode = input.next(); } } public static void moreSubjects(String []subCodeArray, String []subNameArray) { Scanner input = new Scanner(System.in); System.out.println("Please enter a subject name?"); String subName = input.next(); System.out.println("Please enter a subject code?"); String subCode = input.next(); int pos = 0; boolean more = true; while (more == true) <------This should be == if (subCodeArray != null && subNameArray != null) <-----------This should be && subCodeArray[pos] = subCode; subNameArray[pos] = subName; pos = pos + 1; else { pos = pos + 1; System.out.println("Do you want to enter another subject? true/false"); more = input.next(); }}}