ppt - Zoo - Yale University
... // Step 3a: Bake cookies (first batch). System.out.println("Set the timer for 8 min."); System.out.println("Place a batch of cookies into the oven."); System.out.println("Allow the cookies to bake."); ...
... // Step 3a: Bake cookies (first batch). System.out.println("Set the timer for 8 min."); System.out.println("Place a batch of cookies into the oven."); System.out.println("Allow the cookies to bake."); ...
Chapter 10 slides
... should be modeled using class inheritance. A weak is-a relationship, also known as an is-kind-of relationship, indicates that an object possesses a certain property. A weak is-a relationship can be modeled using interfaces. For example, all strings are comparable, so the String class implements the ...
... should be modeled using class inheritance. A weak is-a relationship, also known as an is-kind-of relationship, indicates that an object possesses a certain property. A weak is-a relationship can be modeled using interfaces. For example, all strings are comparable, so the String class implements the ...
The scope of local v..
... Variables with same name in nested scopes (cont.) • The first definition of the variable r takes places inside the outer scope • The second definition of the variable with the same name r takes places inside the inner scope • From what we have learned above, the first variable r is also accessible ...
... Variables with same name in nested scopes (cont.) • The first definition of the variable r takes places inside the outer scope • The second definition of the variable with the same name r takes places inside the inner scope • From what we have learned above, the first variable r is also accessible ...
Java applications
... Understanding the First Class, Part 1 • Everything used within a Java program must be part of a class • Define a Java class using any name or identifier • Requirements for identifiers – Must begin with one of the following: ...
... Understanding the First Class, Part 1 • Everything used within a Java program must be part of a class • Define a Java class using any name or identifier • Requirements for identifiers – Must begin with one of the following: ...
Research on teaching of Java Exception Handling
... From the aspect of natural learning laws and teaching practices, the teaching process above mentioned is reasonable in general. Then the following questions focus on how to visualize those abstract ideas and concepts into teaching process, and simplify the complex ideas. Additionally how to make stu ...
... From the aspect of natural learning laws and teaching practices, the teaching process above mentioned is reasonable in general. Then the following questions focus on how to visualize those abstract ideas and concepts into teaching process, and simplify the complex ideas. Additionally how to make stu ...
Exception
... matching catch-block. » The finally-block runs after the catch-block. An exception is thrown in the try-block and there is no matching catch-block. » The finally-block is executed before the method ends. » Code that is after the catch-blocks but not in a finallyblock would not be executed in this si ...
... matching catch-block. » The finally-block runs after the catch-block. An exception is thrown in the try-block and there is no matching catch-block. » The finally-block is executed before the method ends. » Code that is after the catch-blocks but not in a finallyblock would not be executed in this si ...
Chapter 9: Object-Oriented Software Development
... Using Interfaces or Abstract Classes, cont. For example, since an orange is a fruit, their relationship should be modeled using class inheritance. A weak is-anextension-of relationship, also known as an is-kind-of relationship, indicates that an object possesses a certain property. A weak is-an-ext ...
... Using Interfaces or Abstract Classes, cont. For example, since an orange is a fruit, their relationship should be modeled using class inheritance. A weak is-anextension-of relationship, also known as an is-kind-of relationship, indicates that an object possesses a certain property. A weak is-an-ext ...
Characteristics of Java (Optional) Y. Daniel Liang Supplement for
... detect many problems that would first show up at execution time in other languages. Java has eliminated certain types of error-prone programming constructs found in other languages. It does not support pointers, for example, thereby eliminating the possibility of overwriting memory and corrupting da ...
... detect many problems that would first show up at execution time in other languages. Java has eliminated certain types of error-prone programming constructs found in other languages. It does not support pointers, for example, thereby eliminating the possibility of overwriting memory and corrupting da ...
Elements of Programming Languages Overview Advanced
... 1.0), plus some Scala-isms Modern languages extend this model in several ways We can define a structure (class/object/trait) inside another: As a member of the enclosing class (tied to a specific instance) or as a static member (shared across all instances) As a local definition inside a method As a ...
... 1.0), plus some Scala-isms Modern languages extend this model in several ways We can define a structure (class/object/trait) inside another: As a member of the enclosing class (tied to a specific instance) or as a static member (shared across all instances) As a local definition inside a method As a ...
Chapter 14
... Exception Handling Exceptions: • allow program units to signal error or other “exceptional” conditions • allow error handling code to be separate from other code • provide flexibility in where errors are handled This is especially important for “library” units that may be reused in many programs, be ...
... Exception Handling Exceptions: • allow program units to signal error or other “exceptional” conditions • allow error handling code to be separate from other code • provide flexibility in where errors are handled This is especially important for “library” units that may be reused in many programs, be ...
Exceptions
... The MONITOR block consists of the READ statement and the IF group. - The first ON-ERROR block handles status 1211 which is issued for the READ operation if the file is not open. - The second ON-ERROR block handles all other file errors. - The third ON-ERROR block handles the string-operation status ...
... The MONITOR block consists of the READ statement and the IF group. - The first ON-ERROR block handles status 1211 which is issued for the READ operation if the file is not open. - The second ON-ERROR block handles all other file errors. - The third ON-ERROR block handles the string-operation status ...
Chapter 13 Exception Handling
... the location where an error is detected is usually not the place where the appropriate solution is known. ...
... the location where an error is detected is usually not the place where the appropriate solution is known. ...
Chapter 12
... Rethrowing and Throwing an Exception • When an exception occurs in a try block, control immediately passes to one of the catch blocks; typically, a catch block does one of the following: – Completely handles the exception – Partially processes the exception; in this case, the catch block either ret ...
... Rethrowing and Throwing an Exception • When an exception occurs in a try block, control immediately passes to one of the catch blocks; typically, a catch block does one of the following: – Completely handles the exception – Partially processes the exception; in this case, the catch block either ret ...
OO Programming in Java Intro to the Java Language
... The JDK documentation provides a complete list of the core classes and their specifications. Let’s take a look at the JDK documentation. ...
... The JDK documentation provides a complete list of the core classes and their specifications. Let’s take a look at the JDK documentation. ...
Multithreading
... Java objects were designed with multithreading in mind: for every object there is a lock associated with it. The object can only be accessed by a thread that possesses the lock at any given time. To prevent competing threads from accidentally corrupt the state of the shared object, use one of the fo ...
... Java objects were designed with multithreading in mind: for every object there is a lock associated with it. The object can only be accessed by a thread that possesses the lock at any given time. To prevent competing threads from accidentally corrupt the state of the shared object, use one of the fo ...
EXCEPTION HANDLING Exception
... Caused when a program tries to store the wrong type of data in an array Caused by an attempt to access a nonexistent file Caused by general I/O failures, such as inability to read from a file Caused by referencing a null object Caused when a conversion between strings and number fails Caused when th ...
... Caused when a program tries to store the wrong type of data in an array Caused by an attempt to access a nonexistent file Caused by general I/O failures, such as inability to read from a file Caused by referencing a null object Caused when a conversion between strings and number fails Caused when th ...
CS 112 Introduction to Programming - Zoo
... // Step 3a: Bake cookies (first batch). System.out.println("Set the timer for 8 min."); System.out.println("Place a batch of cookies into the oven."); System.out.println("Allow the cookies to bake."); ...
... // Step 3a: Bake cookies (first batch). System.out.println("Set the timer for 8 min."); System.out.println("Place a batch of cookies into the oven."); System.out.println("Allow the cookies to bake."); ...
statement - Yale "Zoo"
... System.out.println("Cream the butter and sugar."); System.out.println("Beat in the eggs."); System.out.println("Stir in the dry ingredients."); // Step 3a: Bake cookies (first batch). System.out.println("Set the timer for 8 min."); System.out.println("Place a batch of cookies into the oven."); Syste ...
... System.out.println("Cream the butter and sugar."); System.out.println("Beat in the eggs."); System.out.println("Stir in the dry ingredients."); // Step 3a: Bake cookies (first batch). System.out.println("Set the timer for 8 min."); System.out.println("Place a batch of cookies into the oven."); Syste ...
Catch block
... matching catch-block. » The finally-block runs after the catch-block. An exception is thrown in the try-block and there is no matching catch-block. » The finally-block is executed before the method ends. » Code that is after the catch-blocks but not in a finallyblock would not be executed in this si ...
... matching catch-block. » The finally-block runs after the catch-block. An exception is thrown in the try-block and there is no matching catch-block. » The finally-block is executed before the method ends. » Code that is after the catch-blocks but not in a finallyblock would not be executed in this si ...
Java syntax
The syntax of the Java programming language is the set of rules defining how a Java program is written and interpreted.The syntax is mostly derived from C and C++. Unlike C++, Java is almost exclusively an object-oriented language. There are no global functions or variables, all code belongs to classes and all values are objects. The only exception is the primitive types, which are not represented by a class instance due to performance reasons (though can be automatically converted to objects and vice versa via autoboxing). Some features like operator overloading or unsigned integer types are omitted to simplify the language and to avoid possible programming mistakes.Java syntax is constantly improved in major JDK releases. The latest improvements to the language happened in Java SE 8(Java SE 7 introduced such language features as try-with-resources statements and binary literals).