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String mysql="mysqldump -uroot -proot  --opt databasename > d:/test.sql";    
java.lang.Runtime.getRuntime().exec("cmd /c "+mysql);   
//µ¼Èë
String mysql="mysqladmin -uroot -proot create databasename";    
java.lang.Runtime.getRuntime().exec("cmd /c "+mysql);    
path="mysql databasename < d:/test.sql";    
java.lang.Runtime.getRuntime().exec("cmd /c "+path); 


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