java Exception「Exception in thread “main” java.lang.StringIndexOutOfBoundsException:」が発生した場合の対処法

public class App {
    public static void main(String[] args) throws Exception {

        String str = "hello";        
        
        System.out.println(str.substring(0, 6));     

    }
}

Exception in thread "main" java.lang.StringIndexOutOfBoundsException: begin 0, end 6, length 5
        at java.base/java.lang.String.checkBoundsBeginEnd(String.java:4601)
        at java.base/java.lang.String.substring(String.java:2704)
        at App.main(App.java:6)

public class App {
    public static void main(String[] args) throws Exception {

        String str = "hello";        
        
        System.out.println(str.substring(0, str.length())); // hello

    }
}