Java and Operators example

package com.java.myapp;

public class MyClass {
	
    public static void main(String[] args) {

        // result is now 3
        int result = 1 + 2;
        System.out.println(result);

        // result is now 2
        result = result - 1;
        System.out.println(result);

        // result is now 4
        result = result * 2;
        System.out.println(result);

        // result is now 2
        result = result / 2;
        System.out.println(result);

        // result is now 10
        result = result + 8;
        // result is now 3
        result = result % 7;
        System.out.println(result);
		    	
    }
	
}

package com.java.myapp;

public class MyClass {
	
    public static void main(String[] args) {

        String firstString = "This is";
        String secondString = " a concatenated string.";
        String thirdString = firstString+secondString;
        System.out.println(thirdString);
		    	
    }
	
}

package com.java.myapp;

public class MyClass {
	
    public static void main(String[] args) {

        // result is now 1
        int result = +1;
        System.out.println(result);
        // result is now 0
        result--;
        System.out.println(result);
        // result is now 1 
        result++;
        System.out.println(result);
        // result is now -1
        result = -result;
        System.out.println(result);
        boolean success = false;
        // false
        System.out.println(success);
        // true
        System.out.println(!success);
		    	
    }
	
}

package com.java.myapp;

public class MyClass {
	
    public static void main(String[] args) {

        int i = 3;
        i++;
        // prints 4
        System.out.println(i);
        ++i;			   
        // prints 5
        System.out.println(i);
        // prints 6
        System.out.println(++i);
        // prints 6
        System.out.println(i++);
        // prints 7
        System.out.println(i);
		    	
    }
	
}

package com.java.myapp;

public class MyClass {
	
    public static void main(String[] args) {

        int value1 = 1;
        int value2 = 2;
        if(value1 == value2)
            System.out.println("value1 == value2");
        if(value1 != value2)
            System.out.println("value1 != value2");
        if(value1 > value2)
            System.out.println("value1 > value2");
        if(value1 < value2)
            System.out.println("value1 < value2");
        if(value1 <= value2)
            System.out.println("value1 <= value2");
		    	
    }
	
}

package com.java.myapp;

public class MyClass {
	
    public static void main(String[] args) {

        int value1 = 1;
        int value2 = 2;
        if((value1 == 1) && (value2 == 2))
            System.out.println("value1 is 1 AND value2 is 2");
        if((value1 == 1) || (value2 == 1))
            System.out.println("value1 is 1 OR value2 is 1");
		    	
    }
	
}

package com.java.myapp;

public class MyClass {
	
    public static void main(String[] args) {

        int value1 = 1;
        int value2 = 2;
        int result;
        boolean someCondition = true;
        result = someCondition ? value1 : value2;

        System.out.println(result);
		    	
    }
	
}

package com.java.myapp;

class Parent {}
class Child extends Parent implements MyInterface {}
interface MyInterface {}

public class MyClass {
	
    public static void main(String[] args) {

        Parent obj1 = new Parent();
        Parent obj2 = new Child();

        System.out.println("obj1 instanceof Parent: "
            + (obj1 instanceof Parent));
        System.out.println("obj1 instanceof Child: "
            + (obj1 instanceof Child));
        System.out.println("obj1 instanceof MyInterface: "
            + (obj1 instanceof MyInterface));
        System.out.println("obj2 instanceof Parent: "
            + (obj2 instanceof Parent));
        System.out.println("obj2 instanceof Child: "
            + (obj2 instanceof Child));
        System.out.println("obj2 instanceof MyInterface: "
            + (obj2 instanceof MyInterface));
		    	
    }
   
}