如果我编译任何java程序，我收到此错误

Question

If i compile any java program, I got this error

b1.java:3: cannot access String
bad class file: .\String.java
file does not contain class String
Please remove or make sure it appears in the correct subdirectory of the classpath.
public static void main(String ar[])throws IOException{

Answer 1

As visible from your compilation step in the terminal,

String is already a Java-library class available in JDK.

Hence,you can't give such name to your program/class.

Hence,you receive such error.

Try naming it something else like public class MyString and rename your source code as MyString.java ---recompile it and then you won't receive such errors.

Answer 2

String is a datatype defined within the Java-Library. You cannot name a variable as String or any other name of datatypes, in that way you cannot name it for a class.

Answer 3

String is in-built Class in Java. Hence you can not give the name for Class as String. you can check it by - just give the name for Class as Class string and save it as string.java . now it will compile and run properly. but according to naming convention first letter of Class Name must be in UpperCase , so you can name it as MyString.java