3. Java JavaObject-Oriented Java DevelopmentKitsJDK J2SE
5.0Java 2 Platform Standard Edition5.0JDKJ2SE Development Kit
5.0
4. Java J2SE 5.0Java 2 Platform Standard Edition5.0JDKJ2SE
Development Kit 5.0 JavaSE 6Java Platform, Standard
Edition6JDK6Java SE Development Kit 6 261.6.0 6productversion1.6.0
developerversion
30. Java javac HelloJava.java error: cannot read:
HelloJava.java javac.java HelloJava.java:1: class HelloJava is
public, should be declared in a file named HellJava.java
31. Java HelloJava.java:3: cannot find symbol javac PathPathJDK
bin
55. int testNumber = 10; System.out.println(testNumber / 3);
int testNumber = 10; System.out.println(testNumber / 3.0);
System.out.println((double) testNumber / 3);
56. int testInteger = 0; double testDouble = 3.14; testInteger
= testDouble; System.out.println(testInteger); possible loss of
precision found : double required: int testInteger = testDouble ^ 1
error