Java Test Summary for the second time

Java Second Test summary 1. Related knowledge points summarizing Java test questions loops and recursive knowledge points

complementary points of knowledge :

1. For Loop statement: for (expression 1; expression 2; expression 3) expression one is responsible for the initialization of the variable ! Expression 2 is an expression with a Boolean value called a loop condition, and expression 3 is used to rest the variable and change the loop condition.
2. If the value of the expression in the switch statement is not equal to the constant value of any case, then several statements after the default are executed.
3. For (declares the loop variable: the name of the array) means that the loop variable takes the value of each element in the array at once.
4. The scanner class creates an object, noting that the type after next in the statement is capitalized with the first letter.
5. Recursive algorithm is a kind of algorithm that calls itself directly or indirectly.

Java Jdb Debugging Knowledge points

complementary points of knowledge :

* * Command list * *	usage
Connectors	Lists the connectors and conveyors available in this VM
Run [class [parameter]]	Start executing the main class of the application
Print < expressions >	The value of an output expression
Dump < expressions >	Output all object information
eval < expressions >	The value of the output expression (same as print)
Set	Specify a new value for a field/variable/array element
Locals	Outputs all local variables in the current stack frame
Classes	Lists the currently-known classes
Class < id>	Display the details of a named class
Methods < class Id>	Methods for listing classes
Stop in < class id>.< method >[(parameter type,...)]	To set breakpoints in a method
Stop at < class id>:< line >	Set breakpoints in rows
Clear < Class id>.< method >[(parameter type,...)]	To clear breakpoints in a method
Clear < class id>:< lines >	Clear a breakpoint in a row
Clear	List breakpoints
Step	Carry on as the forward
Step Up	Executes the current method back to its calling program
Stepi	Execute current Instruction
Next	Skipping a line (spanning calls)
Cont	Continue execution from Breakpoint
list [line number	Method
Use (or sourcepath) [source file path]	Show or change the source path
Exclude [< class mode, ... "None"]	No step or method events are reported for the specified class
Classpath	Output classpath information from the target VM
	Execute the command repeatedly n times
Help (or?)	List commands
Version	Output version Information
Exit (or Quit)	Exit debugger

In-Class content results complement

Chapter two, chapter three, programming problems complement

Java Test Summary for the second time