1.2
public class Test{
public static void main(String[] args){
int i;
for(i=1;i<=5;i++){
System.out.println("Welcome to java");
}
}
1.8
public class Test{
public static void main(String[]args){
final double PI=3.14;
double radius=5.5;
System.out.println(2*radius*PI);
System.out.println(PI*radius*radius);
}
}
1.12
public class AverageSpeed{
public static void main(String[]args){
double speedkm =60/(45.5/14);
double speedm = speedkm /1.6;
system.out.println（“averagespeed = ”+speedm + "m/h"）
}
}
public class Test{
public static viod main(String[ ] args){
System out println(" A");
System out println(" AA");
System out println("AAAAA");
System out println("A A"); }
}