変数の型 - Java 演習
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The code defines a ListEvenNumbers class with a main method. It uses a for loop to iterate from 1 to a limit of 50, and prints any numbers that are even (where i % 2 == 0) to the console. The output printed would be all even numbers from 2 to 50.
![public class ListEvenNumbers {
public static void main(String[] args) {
//define limit
int limit = 50;
System.out.println("Printing Even numbers between 1 and " + limit);
// i 1 50
for(int i=1; i <= limit; i++){
// ? ?
// P37
if( i % 2 == 0) {
System.out.print(i + " ");
}
}
}
}
/*
Output of List Even Numbers Java Example would be
Printing Even numbers between 1 and 50
2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50
*/
2011 10 3](https://image.slidesharecdn.com/random-111003080508-phpapp02/85/Java-4-320.jpg)
![public class VariablesSample {
public static void main(String[] args) {
byte b;
short s;
int i;
long l;
char c;
float f;
double d;
b = Byte.MIN_VALUE;
s = Short.MIN_VALUE;
i = Integer.MIN_VALUE;
l = Long.MIN_VALUE;
c = (int)Character.MIN_VALUE;
f = Float.MIN_VALUE;
d = Double.MIN_VALUE;
System.out.println(b);
System.out.println(s);
System.out.println(i);
System.out.println(l);
System.out.println((int)c);
System.out.println(f);
System.out.println(d);
}
}
2011 10 3](https://image.slidesharecdn.com/random-111003080508-phpapp02/85/Java-14-320.jpg)
![public class BooleanSample {
public static void main(String[] args) {
boolean t = true;
boolean f = false;
if( t == true ){
System.out.println("t is true!");
}else{
System.out.println("t is false!");
}
if( f == true ){
System.out.println("f is true!");
}else{
System.out.println("f is false!");
}
boolean isTtrue = ( t == true);
System.out.println("(t == true) is " + isTtrue);
}
}
2011 10 3](https://image.slidesharecdn.com/random-111003080508-phpapp02/85/Java-17-320.jpg)
変数の型 - Java 演習
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- 4. public class ListEvenNumbers { public static void main(String[] args) { //define limit int limit = 50; System.out.println("Printing Even numbers between 1 and " + limit); // i 1 50 for(int i=1; i <= limit; i++){ // ? ? // P37 if( i % 2 == 0) { System.out.print(i + " "); } } } } /* Output of List Even Numbers Java Example would be Printing Even numbers between 1 and 50 2 4 6 8 10 12 14 16 18 20 22 24 26 28 30 32 34 36 38 40 42 44 46 48 50 */ 2011 10 3
- 5. 2011 10 3
- 6. 0 -> 0000 0000 -> 00 1 -> 0000 0001 -> 01 2 -> 0000 0010 -> 02 3 -> 0000 0011 -> 03 4 -> 0000 0100 -> 04 5 -> 0000 0101 -> 05 6 -> 0000 0110 -> 06 7 -> 0000 0111 -> 07 8 -> 0000 1000 -> 08 9 -> 0000 1001 -> 09 10 -> 0000 1010 -> 0A 11 -> 0000 1011 -> 0B 12 -> 0000 1100 -> 0C 13 -> 0000 1101 -> 0D 14 -> 0000 1110 -> 0E 15 -> 0000 1111 -> 0F 16 -> 0001 0000 -> 10 2011 10 3
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- 14. public class VariablesSample { public static void main(String[] args) { byte b; short s; int i; long l; char c; float f; double d; b = Byte.MIN_VALUE; s = Short.MIN_VALUE; i = Integer.MIN_VALUE; l = Long.MIN_VALUE; c = (int)Character.MIN_VALUE; f = Float.MIN_VALUE; d = Double.MIN_VALUE; System.out.println(b); System.out.println(s); System.out.println(i); System.out.println(l); System.out.println((int)c); System.out.println(f); System.out.println(d); } } 2011 10 3
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- 17. public class BooleanSample { public static void main(String[] args) { boolean t = true; boolean f = false; if( t == true ){ System.out.println("t is true!"); }else{ System.out.println("t is false!"); } if( f == true ){ System.out.println("f is true!"); }else{ System.out.println("f is false!"); } boolean isTtrue = ( t == true); System.out.println("(t == true) is " + isTtrue); } } 2011 10 3
- 18. 2011 10 3