java - JAR File not exececuting which is build by netbeans -

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i beginner in java gui , using netbeans 7.3 use swing components, problem working fine, 1 day when clicked clean & build , tested jar file, not executing, ran in netbeans , working fine.
thought problem of build properties compared build properties project working fine jar file cannot find difference, problem when double-click jar file, no error shown, tried many ways executing cmd did'nt worked.
can me out missing, , 1 thing more tried build project on computer through netbeans no use.

try open .jar winrar, , check if classes being added .jar, if not being added bug netbeans, advise install netbeans 7.2, , open project again, , regenerate jar file. having similar problem netbeans 7.3


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