plugins/InspectionGadgets/test/com/siyeh/igtest/numeric/unnecessary_explicit_numeric_cast/UnnecessaryExplicitNumericCast.java

package com.siyeh.igtest.numeric.unnecessary_explicit_numeric_cast;




public class UnnecessaryExplicitNumericCast {

    void a(byte b) {
        double d = (double) 1;
        d = (double) 1.0f;
        d = (double) b;
        char c = (char) 1;
        b = (int)7;
    }

    double b(int a, byte b) {
        return (double)a * (double) b;
    }

    public static void main(String[] args) {
        int i = 10;

        double d = 123.0 / (456.0 * (double) i);
    }

    void unary() {
        byte b = 2;
        int a[] = new int[(int)b];
        final int c = a[((int) b)];
        int[] a2 = new int[]{(int)b};
        int[] a3 = {(int)b};
        final int result = (int) b << 1;
        c((int)b);
        new UnnecessaryExplicitNumericCast((long)b);
    }

    void c(int i) {}
    UnnecessaryExplicitNumericCast(long i) {}

    void c(int cols, int no) {
      int rows = (int) Math.ceil((double) no / cols);
    }

    void source() {
      target((int)'a');
      target2((int)'b');
    }
    void target(int c) {}
    void target(char c) {}
    void target2(int d) {}

    void foo() {
        float x = 2;
        target((int) x);  // this line complains: 'x' unnecessarily cast to 'int'
    }

    void a(float angleFromTo) {
      float f = (float) Math.cos(0.5) * 1.0f; // necessary
      final long l = (long) i() * 9L;
      float angle2 = angleFromTo + (float) (Math.PI / 2);
    }

    int i() {
      return 10;
    }

    boolean redundantTypeCast(long l) {
      return 0L == (long)l;
    }
}