Term
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Definition
| Application program interface. Contains predefined classes and interfaces for developing Java programs. |
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Term
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Definition
| Java Development Toolkit. A set of separate programs, each invoked from a command line, for developing and testing Java programs. |
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Term
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Definition
| Integrated development environment. A software application that normally consists of a source code editor, compiler, build automation tools, and a debugger. |
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Term
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Definition
| A specification for software which interprets Java programs that have been compiled into byte-codes, and usually stored in a ".class" file. |
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Term
| Display message in dialog box |
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Definition
import javax.swing.JOptionPane;
Main method
JOptionPane.showMessageDialog(null, "Message dialog"); |
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Term
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Definition
public class Class {
public static void main(String[] args) { |
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Term
| Reading input from the console |
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Definition
import java.util.Scanner;
Main method
Scanner input = new Scanner(System.in); |
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Term
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Definition
| final datatype CONSTANT = VALUE; |
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Term
| Data types from smallest to largest |
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Definition
byte
short
int
long
float
double |
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Term
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Definition
i = i + 8 i+=8
i-=
i*=
i/=
i%= |
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Term
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Definition
System.out.println((int)1.7) displays 1
System.out.println((double)1/2) displays 0.5 |
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Term
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Definition
char is used to represent a single character.
char letter = 'A';
char numChar = '4'; |
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Term
| Increment/decrement character data type |
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Definition
char ch = 'a';
System.out.println(++ch);
displays 'b' |
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Term
| Getting input from input dialogs |
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Definition
String variableNameString = JOptionPane.showInputDialog("Input dialog");
datatype variableName = Datatype.parseDatatype(variableNameString); |
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Term
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Definition
| Hold either 'true' or 'false' |
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Term
| Logical/Boolean Operators |
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Definition
! not
&& and
|| or
^ exclusive or |
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Term
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Definition
if (boolean expression) {
statement;
} |
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Term
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Definition
if (boolean exp.) {
statements;
}
else {
statements;
} |
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Term
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Definition
if (i>k) {
if (j>k)
System.out.print("i & j > k");
}
else
System.out.print("i<=k"); |
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Term
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Definition
switch (switch expression) {
case value1: statement1;
break;
case value2: statement2;
break;
default: default statement;
} |
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Term
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Definition
executes the statements in the loop body until the loop continuation condition is no longer true.
while (loop continuation condition) {
statements;
} |
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Term
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Definition
The loop body is executed first. Then the loop continuation condition is evaluated and if it's true the loop body is executed again; if it's false the loop ends.
do {
statements;
} while (loop continuation condition); |
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Term
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Definition
Performs initial action once, then repeatedly executes the statements in the loop body, and performs an action after each iteration
for (initial action; loop continuation condition; action after each iteration){
statement;
} |
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Term
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Definition
| Each time the outer loop is repeated, the inner loops are reentered and started anew. |
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Term
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Definition
| Immediately terminates the loop. |
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Term
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Definition
| Ends the current iteration. |
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Term
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Definition
modifier returnValueType methodName(list of parameters) {
ex:
public static int max(int num1, int num2){ |
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Term
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Definition
int larger = max(3,4);
or
System.out.println(max(3,4)); |
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Term
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Definition
| The part of the program where the variable can be referenced. Starts from its declaration and continues to the end of the block that contains the variable. |
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Term
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Definition
elementType arrayRefVar = new elementType[arraySize];
ex:
double[] myList = new double[10]; |
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Term
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Definition
| double[] my List = {4, 2, 6, 8, 9}; |
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Term
| Passing arrays to methods |
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Definition
| public static void printArray(int[] array) {
for (int i=0; i |
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