java4
package Chapter5;
public class MathOperator{
public static void main(String [] args) {
System.out.println("(5+2)="+(5+2));
System.out.println("(5-2)="+(5-2));
System.out.println("5+2="+5+2);
System.out.println("(5-2)="+(5-2));
System.out.println("5*2="+5*2);
System.out.println("5/2="+5/2);
System.out.println("5/2.0="+5/2.0);
System.out.println("5.0/2="+5.0/2);
System.out.println("5%2="+5%2);int i=5,j=5;
System.out.println("i++"+ i++);
System.out.println("++j="+ ++j);
System.out.println("+j="+ +j);
System.out.println("+j="+ +j);
System.out.println("+j="+ +j);
System.out.println("+j="+ +j);
System.out.println("+j="+ +j);
System.out.println("+j="+ +j);
System.out.println("+j="+ +j);
System.out.println("-j="+ -j);
System.out.println("-j="+ -j);
System.out.println("-j="+ -j);
System.out.println("-j="+ -j);
System.out.println("-j="+ -j);
System.out.println("-j="+ -j);
System.out.println("-j="+ -j);
System.out.println("-j="+ -j);
System.out.println("-j="+ -j);
System.out.println("--j="+ --j);
System.out.println("--j="+ --j);
System.out.println("--j="+ --j);
System.out.println("--j="+ --j);
System.out.println("--j="+ --j);
System.out.println("--j="+ --j);
System.out.println("--j="+ --j);
System.out.println("--j="+ --j);}
}
練習+-*/還有前置後置寫法
package Chapter5;
public class RelationalDemo{
public static void main(String [] args) {
int i=5,j=6;
System.out.println("i>=j "+(i>=j));
System.out.println("i>j "+(i>j));
System.out.println("i<=j= "+(i<=j));
System.out.println("i<j= "+(i<j));
System.out.println("i=j= "+(i=j));
System.out.println("i!=j= "+(i!=j));}
}
練習大於等於小於
package Chapter5;
public class ConditionDemo{
public static void main(String [] args) {
int i=5,j=6;
System.out.println((i>=5)&&(i>6));
System.out.println(!(i>=5));
System.out.println((i>=5)||(i>6));
System.out.printf("123456789");
System.out.printf("123456789\n");
System.out.printf("123456789\n");
System.out.printf("(i>=5)= ture ");
}
}
練習printf可以形成不斷行
package Chapter5;
public class BitWise{
public static void main(String [] args) {
System.out.println(5&6);
System.out.println(5|6);
System.out.println(5^6);
System.out.println(~5);
System.out.println(~-5);
System.out.println(~-10000);
System.out.println(6<<2);
System.out.println(6>>2);
System.out.println(-5>>>1);
}
}
練習位元運算以及位移運算
