Java Space

 

Hash Map Constructors HashMap () Constructs empty HashMap with a default initial capacity 11 and load factor 0.75. HashMap (int initialCapacity) Constructs empty HashMap with the specified initial capacity and default load factor 0.75. HashMap (int initialCapacity, float loadFactor) Constructs empty HashMap with the specified initial capacity and the specified load factor. HashMap (Map t) Constructs a new HashMap with the mappings same as the passed Map.

/*delete*/ delete from mytable where MONTH (scheduleDate)=5; /*to Select*/ select * from mytable where MONTH (scheduleDate)=5; /*update*/ update set recordtype="saved" where MONTH (scheduleDate)=5;

Query to get total number of records Select count (*) from mytable; Query to change the storage engine ALTER TABLE mytable ENGINE = innodb

Move the file ---"myscript.sql"--to /var/lib/mysql/ using winscp open putty connection to the linux server type #mysql -----in the command prompt mysql>source /var/lib/mysql/myscript.sql

Installing Java 1.6x and Tomcat 6.x on Linux--Using Winscp Step-1 Installing java: Download jdk version--1.6x for linux from Sun website Download the non-rpm version. Use winscp and connect to the server. go to usr dir right click and create a new directory--java give all the read/write permission to the directory move the download jdk from your local system to the java directory open putty connection to the server #cd usr execute the command using putty:./jre-1.bin /* optional # mkdir -p /usr/local/java # cd /usr/local/java # mv /path/to/jdk-1_6_0_20-linux-x64.bin . # chmod u+x jdk-1_6_0_20-linux-x64.bin # ./jdk-1_6_0_20-linux-x64.bin */ Step-2 set JAVA_HOME and PATH set JAVA_HOME to the dir of java PATH to bin dir of JAVA_HOME U se--Putty to execute the below # export JAVA_HOME=/usr/java/jdk1.6.0_10 # export PATH=$JAVA_HOME/bin:$PATH Check if we have installed it # which java /usr/java/jdk1.6.0_10/bin/java # java -version java version "1.6....