Fundamentals of Java Chapter 3
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Defines the rules for interpreting the meaning of statements. | Semantics
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| Items in a program that do not change. Are restrincted to primitive data types or strings. | Literals
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| Defines the rules for combining symbols and words into statements. | Syntax
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| Java can hadle two types of data: | Primative Data Types, Objects
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| the operation of joining two character strings end to end. | Concantenation operator
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| A collection of classes. | Package
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| x is the overall name of the package, y is the name of a subsection within the package, z is the nam of a particular class in a subsection. | import x.y.z
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| Understands two messages print and print ln. | System.out
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| Returns the first double in the input line. Leading and trailing spaces are ignored. | double nextDouble()
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| Returns the first integer in the input line. Leading and trailing spaces are ignored. | int nextInt()
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| Returns the input line, including leading and trailing spaces. Warning: A leading newline is returned as an empty string. | String nextLine ()
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| A step-by-step procedurefor solving a problem or accomplishing some end. | algorithm
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| Program algorithms that are often written in a somewhat stylized verson of English | Psuedocode
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| Three types of mistakes, or errors: | Syntax errors, Run-time errors, and logic errors
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| Errors that occur when we violate a syntax rule. These errors are detected at compilation. | Syntax Errors
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| An error that occurs when we ask the computer to do something that it considers illegal, such as dividing by 0. | Run-time errors
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| An error that occurs when we fail to express ourselves accuratly. Also called design errors or bugs. | Logic Errors
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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