SETTRACE Verb – BBj

BBj-Specific Information

For this topic's original documentation, see SETTRACE Verb - Set Line Tracing.

Description

BBj traces Java calls by listing:

>JAVA: new fully.qualified.classname(arglist)

>JAVA: fully.qualified.methodname(arglist)
>JAVA: fully.qualified.fieldname

In BBj 8.0 and higher, SETTRACE supports PREC=int shown in Example 3.

MODE	Description
PREC=int	Specifies the timer precision (number of decimal places). The default precision is 2 decimal places; the maximum is 6.

Examples

Example 1

0001 SETTRACE
0010 REM ' create an ArrayList object
0020 LET day!=new java.util.ArrayList()
0030 REM ' store the names of the days of the week
0040 FOR d=1 TO 7
0050 day!.add(DATE(JUL(2001,7,d):"%Dl"))
0060 NEXT d
0070 REM ' and print the local name for Sunday
0080 PRINT day!.get(0)
>run
0010 REM ' create an ArrayList object
0020 LET day!=new java.util.ArrayList()
>JAVA: new java.util.ArrayList()
0030 REM ' store the names of the days of the week

0040 FOR d=1 TO 7

0050 day!.add(DATE(JUL(2001,7,d):"%Dl"))

>JAVA: java.util.ArrayList.add((java.lang.Object)"Sunday") returns boolean

0060 NEXT d

0050 day!.add(DATE(JUL(2001,7,d):"%Dl"))

>JAVA: java.util.ArrayList.add((java.lang.Object)"Monday") returns boolean

0060 NEXT d

0050 day!.add(DATE(JUL(2001,7,d):"%Dl"))

>JAVA: java.util.ArrayList.add((java.lang.Object)"Tuesday") returns boolean
0060 NEXT d
0050 day!.add(DATE(JUL(2001,7,d):"%Dl"))
>JAVA: java.util.ArrayList.add((java.lang.Object)"Wednesday") returns boolean
0060 NEXT d
0050 day!.add(DATE(JUL(2001,7,d):"%Dl"))
>JAVA: java.util.ArrayList.add((java.lang.Object)"Thursday") returns boolean
0060 NEXT d
0050 day!.add(DATE(JUL(2001,7,d):"%Dl"))
>JAVA: java.util.ArrayList.add((java.lang.Object)"Friday") returns boolean
0060 NEXT d
0050 day!.add(DATE(JUL(2001,7,d):"%Dl"))
>JAVA: java.util.ArrayList.add((java.lang.Object)"Saturday") returns boolean
0060 NEXT d
0070 REM ' and print the local name for Sunday
0080 PRINT day!.get(0)
>JAVA: java.util.ArrayList.get((int)0) returns java.lang.Object
Sunday
***** END

READY
>

Example 2

BBj emits ">JAVA:" trace output even for console-mode commands:

>SETTRACE
>REM ' this call returns a Java double value as a number
>PI=java.lang.Math.PI
>JAVA: java.lang.Math.PI returns double

>REM ' this call creates a java.lang.Integer object
>I!=new java.lang.Integer(23)
>JAVA: new java.lang.Integer((int)23)

>REM ' this call returns a Java boolean value as a number
>TRUE=java.lang.Boolean.TRUE.booleanValue()
>JAVA: java.lang.Boolean.TRUE returns java.lang.Boolean
>JAVA: java.lang.Boolean.booleanValue() returns boolean

Example 3

Increased timer precision:

0010 SETTRACE (0,MODE="timed,prec=3")
0020 FOR X=1 TO 3
0030 PRINT X
0040 NEXT X
>run
0020 FOR X=1 TO 3
   {2.97}{2.949}
0030 PRINT X
   1
{22.61}{19.64}
0040 NEXT X
   {25.175}{2.565}
0030 PRINT X
   2
   {26.95}{1.775}
0040 NEXT X
   {28.698}{1.749}
0030 PRINT X
   3
   {31.043}{2.345}
0040 NEXT X
   {32.737}{1.694}
***** END