HW2

yunustzr · web-flow · commit e10fa0415206 · 2020-05-02T20:52:49.000+03:00
diff --git a/HomeWork2/Bowling.java b/HomeWork2/Bowling.java
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+package HomeWork2;
+	public class Bowling {
+		{System.out.println();}
+		public Bowling() {
+			System.out.println();
+		}
+		static { System.out.println();}
+		{ System.out.println(); }
+	}
+//Answer A
+
diff --git a/HomeWork2/Q1.java b/HomeWork2/Q1.java
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+package HomeWork2;
+
+public class deneme {
+
+	public static void main(String[] args) {
+    //A
+	//double num1, int num2 =0;
+	//.Farklı veri tipinde tanımlamalarda aynı satırda iki farklı değişken tanımlanamaz.Java gibi dillerde scope bitimini ';' ifadesi bitirir.Bu haricindeki şıklarda compile eder.
+	//B
+	//int num1, num2;
+	//C
+    //int num1, num2 =0;
+	//D
+	//int num1 =0,num2 =0;
+	//System.out.print(num1+"="+num2);
+	}
+
+}
diff --git a/HomeWork2/Q10.java b/HomeWork2/Q10.java
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+package HomeWork2;
+
+public class Q10 {
+	Integer a=Integer.valueOf("1");
+	public static void main(String[] args) {
+		// TODO Auto-generated method stub
+    Q10 data= new Q10();
+    System.out.print(data.a);
+    //Answer 10) C
+	}
+
+}
diff --git a/HomeWork2/Q11.java b/HomeWork2/Q11.java
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+package HomeWork2;
+
+public class Q11 {
+
+	public static void main(String[] args) {
+		double d1 =5f;
+		double d2 =5.0;
+		float f1 =5f;
+		float f2 =5.0;
+		//Answer D) p4
+	}
+
+}
diff --git a/HomeWork2/Q12.java b/HomeWork2/Q12.java
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+package HomeWork2;
+
+public class Q12 {
+
+	public static void main(String[] args) {
+		// Answer A
+        //byte,char,float,double
+	}
+
+}
diff --git a/HomeWork2/Q13.java b/HomeWork2/Q13.java
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+package HomeWork2;
+
+public class Q13 {
+//Answer D
+}
diff --git a/HomeWork2/Q14.java b/HomeWork2/Q14.java
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+package HomeWork2;
+
+public class Q14 {
+
+	public static void main(String[] args) {
+		String title ="Weather";
+		int hot, double cold;
+		System.out.print(hot+" "+title);
+        //Answer D 
+	}
+
+}
diff --git a/HomeWork2/Q16.java b/HomeWork2/Q16.java
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+package HomeWork2;
+
+public class Q16 {
+
+	public static void main(String[] args) {
+		// Answer A 
+        
+	}
+
+}
diff --git a/HomeWork2/Q17.java b/HomeWork2/Q17.java
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+package HomeWork2;
+
+public class Q17 {
+ public static void main(String[] args) {
+	// Answer C
+ }
+}
diff --git a/HomeWork2/Q18.java b/HomeWork2/Q18.java
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+package HomeWork2;
+
+public class Q18 {
+
+	public static void main(String[] args) {
+		// Answer D 
+
+	}
+
+}
diff --git a/HomeWork2/Q2.java b/HomeWork2/Q2.java
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+package HomeWork2;
+
+public class Q2 {
+
+	public static void main(String[] args) {
+	/*	String chair, table ="Metal";
+		chair =chair + table;
+		System.out.print(chair);
+    */
+		
+		//Answer-D The code does not compile
+		//Comment
+		//chair değişkenine veri ataması gerçekleşmediğinden string birleştirme gerçekleştiremez.
+        
+		String chair ="gold", table ="Metal";
+		chair =chair + table;
+		System.out.print(chair);
+	}
+
+}
diff --git a/HomeWork2/Q21.java b/HomeWork2/Q21.java
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+package HomeWork2;
+
+public class Q21 {
+
+	public static void main(String[] args) {
+		//Answer B k2
+		int Integer =0;//k1
+		Integer int 0;//k2
+		Integer ++;//k3
+		int ++;//k4
+		
+
+	}
+
+}
diff --git a/HomeWork2/Q23.java b/HomeWork2/Q23.java
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+package HomeWork2;
+
+public class Q23 {
+
+	public static void main(String[] args) {
+		// Class tanımlamalarında sayıyla başlamaz.
+
+	}
+
+}
+ class building {}
+ class Cost$ {}
+ class 5Mainst {}
+ class _Outside {}
+
diff --git a/HomeWork2/Q24.java b/HomeWork2/Q24.java
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+package HomeWork2;
+
+public class Q24 {
+
+	public static void main(String[] args) {
+		//Answer D
+		
+		//double d =new Double(1_000_000_.00);
+        //double d =new double(1_000_000_.00);
+        //Double d=new double(1_000_000_.00);
+	}
+
+}
diff --git a/HomeWork2/Q26.java b/HomeWork2/Q26.java
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+package HomeWork2;
+
+public class Q26 {
+    
+	static int defaultValue;
+	static double defaultValue1;
+	static long defaultValue2;
+	static short defaultValue3;
+	public static void main(String[] args) {
+		System.out.println(defaultValue);//0
+		System.out.println(defaultValue1);//0.0
+		System.out.println(defaultValue2);//0
+		System.out.println(defaultValue3);//0
+		//Answer C
+	}
+
+}
diff --git a/HomeWork2/Q28.java b/HomeWork2/Q28.java
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+package HomeWork2;
+
+public class Q28 {
+
+	public static void main(String[] args) {
+    Integer integer =new Integer(4);
+    System.out.print(integer.byteValue());
+    System.out.print("-");
+    int i =new Integer(4);
+    System.out.print(i.byteValue());
+	}
+    //Answer C
+}
diff --git a/HomeWork2/Q3.java b/HomeWork2/Q3.java
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+package HomeWork2;
+
+public class Q3 {
+
+	public static void main(String[] args) {
+		// Which is correct about a instance veriable of type String?
+		//A- String boş bir dizidir.Char degişkeninde tanımlamalarını birleştiren bir dizi dir.Kullanım kolaylığı sağlayan metin tutan data typedir.
+		//B- Varsayılan değeri null dur.
+		//C- Varsayılan bir değeri yok (Yanlış)
+		//D- Değer verilmeden compile edildiğinde initializing hatası verir ilgili satir hatalıdır diye.
+        
+		// Answer C
+	}
+
+}
diff --git a/HomeWork2/Q30.java b/HomeWork2/Q30.java
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+package HomeWork2;
+
+public class Q30 {
+
+	public static void main(String[] args) {
+    /*
+	1 String cat ="animal",dog="animal";
+    2 String cat ="animal";dog ="animal"; 
+	3 String cat, dog ="animal";
+    4 String cat, string dog ="animal";
+	*/
+	
+	//Answer 1,3
+	}
+
+}
diff --git a/HomeWork2/Q35.java b/HomeWork2/Q35.java
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+package HomeWork2;
+
+public class Q35 {
+
+	public static void main(String[] fruits) {
+    String fruit1 = new String("apple");
+    String fruit2 = new String("oronge");
+    String fruit3 = new String("pear");
+    fruit3 =fruit1;
+    fruit2 =fruit3;
+    fruit1 =fruit2;
+    //Answer C
+	}
+
+}
diff --git a/HomeWork2/Q36.java b/HomeWork2/Q36.java
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+package HomeWork2;
+
+public class Q36 {
+
+	public static void main(String[] args) {
+		double d = new Double(1_000_000.00);
+		System.out.print(d);
+		//Answer B
+	
+	}
+
+}
diff --git a/HomeWork2/Q4.java b/HomeWork2/Q4.java
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+package HomeWork2;
+
+public class Q4 {
+
+	public static void main(String[] args) {
+	 //Answer -C
+	 //Veriable tanımlamalarında sayıyı ile değişken tanımlaması başlatılmaz.
+		/*
+		int blue$;
+		int _blue;
+		int 2blue;
+		int Blue;
+		*/
+	}
+
+}
diff --git a/HomeWork2/Q43.java b/HomeWork2/Q43.java
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+package HomeWork2;
+
+public class Q43 {
+
+	public void play() {
+		System.out.print("play-");
+	}
+	public static void finelizer() {
+		// TODO Auto-generated method stub
+      System.out.print("clean-");
+	}
+    	public static void main(String[] args) {
+       Q43 car =new Q43();
+       car.play();
+       System.gc();
+       Q43 doll =new Q43();
+       doll.play();
+	}
+
+}
diff --git a/HomeWork2/Q5.java b/HomeWork2/Q5.java
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+package HomeWork2;
+
+public class Q5 {
+
+	public static void main(String[] args) {
+		//Java isim tanımlamalarında ilk harf büyük olmak zorundadır.
+		//Answer -A
+
+	}
+
+}
diff --git a/HomeWork2/Q6.java b/HomeWork2/Q6.java
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+package HomeWork2;
+
+public class Q6 {
+
+	public static void main(String[] args) {
+		// Answer C
+        //2 Fonksiyonu compile eder.
+	}
+	public String  convert(Integer value) {
+		return value.toString();
+	}
+	public String  convert(Object value) {
+		return value.toString();
+	}
+	public String  convert(int value) {
+		return Integer.toString(value);
+		//Deger tipli nesler de dönüşüm gerçekleştirmek için refarance tipli değişken üzerinden dönüşüm gerçekleştirmek gerekir.
+	    //return value.toString();
+	}
+
+}
diff --git a/HomeWork2/Q7.java b/HomeWork2/Q7.java
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+package HomeWork2;
+
+public class Q7 {
+
+	public static void main(String[] args) {
+     int num =999;
+     int num1 =9_9_9;
+   // int num2 =_9_99;
+   // Answer: C 
+	}
+
+}
diff --git a/HomeWork2/Q8.java b/HomeWork2/Q8.java
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+package HomeWork2;
+
+public class Q8 {
+
+	public static void main(String[] args) {
+	//Which of the foollowing is a wrapper class?
+	//Answer C and D 
+	//Integer,Boolean,Object,Float,Short,Character,Long
+
+	}
+
+}
diff --git a/HomeWork2/Q9.java b/HomeWork2/Q9.java
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+package HomeWork2;
+
+public class Q9 {
+	Integer a=Integer.valueOf("1");
+	
+	public static void main(String[] args) {
+		Integer a=Integer.valueOf("2");
+		Integer b=Integer.valueOf("3");
+			System.out.print(a+b);
+		//Answer B-)5
+
+		}
+}
diff --git a/HomeWork2/TennisBall.java b/HomeWork2/TennisBall.java
