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import java.io.File;
import java.io.IOException;
import java.util.Scanner;
/**
*
* @author Administrator
*/
public class Over {
public Over() throws IOException {
int i;
Scanner sc = new Scanner(System.in);
while (true) {
sc.hasNext();
i = sc.ne ...
一、卸载原有JDK
1.查看CentOS自带的JDK是否安装，如果已经安装卸载
#rpm –qa | grep jdk
#rpm –qa | grep gcj
2卸载
#yum –y remove java-*-gcj-compat
二、安装JDK
下载jdk-6u24-linux-i586.bin或者jdk-6u18-linux-i586-rpm.bin，本次安装使用jdk-6u24-linux-i586.bin
#mkdir /usr/local/java
#cd .usr/local/java
#chmod +x jdk-6u24-linux-i586.bin
#./jdk-6u24-li ...