java设置环境变量3步骤

系统变量path:

;C:Program FilesJavajdk1.7.0_51in

系统变量classpath:

.;C:Program FilesJavajdk1.7.0_51libdt.jar;C:Program FilesJavajdk1.7.0_51lib ools.jar;

用户变量JAVA_HOME:

C:Program FilesJavajdk1.7.0_51