Unlike errors, warnings may or may not cause problems. SYNTAX WARNING: marked by a orange triangular exclaimation sign. You can click on the LIGHT-BULB to get a list of HINTS to resolve this particular error, which may or may not work! HINTS: In some cases, NetBeans shows a ORANGE LIGHT-BULB (for HINTS) next to the ERROR RED-CROSS (Line 5 in the above diagram). Correct all the syntax errors and RUN the program. You CANNOT RUN the program if there is any syntax error (marked by a RED CROSS before the filename). Point your cursor at the RED CROSS to view the error message. It marked a source line with syntax error with a RED CROSS. NetBeans performs incremented compilation, as and when a source line is entered. To run a particular program, open and right-click on the source file ⇒ Run File. Nonetheless, NetBeans allows you to keep more than one programs in a project, which is handy for writing toy programs (such as your tutorial exercises).You should create a NEW Java project for EACH of your Java application.Observe the output on the output console. To run the program, right-click anywhere in the source (or from the "Run" menu) ⇒ Run File. There is no need to "compile" the source code in NetBeans explicitly, as NetBeans performs the so-called incremental compilation (i.e., the source statement is compiled as and when it is entered).
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